The AC650 DSP amplifier
With the AC650, you can build new active speakers or convert passive speakers to fully active.
Control or deeply tune via WiFi on the Acoustas App at the speed of sound.
Control sound and experience measurable sound differences.
Play with sounds live like never before.
It is designed and assembled in the USA 🇺🇸 from the ground up by our team.
Example Speaker Build Video
In this video Stas builds open baffle monitors with four 8 inch woofers and two mids/tweeters using the AC650.
Tuning Speakers with AC650
In this video you can see how to quickly measure, crossover and DSP tune each driver with the Acoustas App.
Example Speaker Build Video
In this video DIYhyfy will be building a high end 3-way active loudspeaker with Acoustas AC650 DSP Amplifier.
Coaxial Speaker Tuning with AC650
In this video DIYhyfy will be using the Acoustas AC650 DSP Amplifier to design crossovers, and EQs for a 3-way loudspeaker. Also Camron uses the analog outputs to integrate subwoofer.
How Audio DIYgest Podcast Episode with Stas, TOID DIY Audio, Impulse Audio and DIY HYFY
1-6 Powered Amplifier - 50W/CH
Control each channel via App
- On/Off
- Invert
- Gain
- Time Delay
- Crossover
- 15-Band Equalizer
Optical Out-2CH 24Bit/192 kHz
Control each channel via App
- On/Off
- Invert
- Gain
- Time Delay
- Crossover
- 15-Band Equalizer
Analog Out 2-CH RCA
Control each channel via App
- On/Off
- Invert
- Gain
- Time Delay
- Crossover
- 15-Band Equalizer
Audio Inputs
- Bluetooth® AptX-HD
- USB Audio 24bit/192kHz
- Optical up to 24bit/192kHz
- Coaxial up to 24bit/192kHz
Buy 2 or more and get a discount in the cart. Repeat customers get even more.
30 Day No Hassle Return Policy
30 Day No Hassle Return Policy
Acoustas Return Policy – Hassle-Free & Customer-Focused
We want you to love your Acoustas purchase, but if it’s not the perfect fit, you have 30 days to return it—no questions asked. As long as your item is in its original condition, in its original packaging, and accompanied by proof of purchase, we’ll issue a full refund to your original payment method. If your product arrives damaged or defective, we’ll take care of it with a free exchange or refund. Just reach out to info@acoustas.com, and we’ll handle the rest! (Link to the Acoustas Return Policy )
Acoustas AC650's Two Year Warranty
Acoustas AC650's Two Year Warranty
At Acoustas, we value each of our customers and are dedicated to offering the highest level of customer service. We will do our best to address each claim promptly and effectively, working directly with customers to resolve any issues to the best of our ability. We strive to provide personalized support and ensure a positive experience, making sure that our customers receive the best possible solution for their needs. (Link to Warranty Info)
Free Shipping
Free Shipping
Acoustas offers free standard shipping on the AC650 Amplifier to all 50 U.S. states, Canada, and all countries where we sell our products. Orders are typically processed within 1-3 business days, with delivery times of 2-3 business days within the U.S., 5-10 business days or faster in Canada depending on customs. If an order requires additional processing time, we will notify the customer via email. Customers are responsible for any applicable duties, taxes, or import fees on international orders. For any shipping inquiries, contact us at info@acoustas.com.
Notes:
In Stock Now - 2-3 Days lead time
Buy 2 or more and get a discount in the cart. Repeat customers get even more.
Active Speaker Processor. Multichannel DSP Amp.
With the AC650, you have everything you need to build high-quality active speakers and sound systems, controlled wirelessly over Wi-Fi® from all your devices.
With the Acoustas App you can control the volume, or address one or multiple channels at the same time. With a 10-channel speaker manager and 6 powered channels, it empowers you to fine-tune your system with a useful modern user interface. Effortlessly manage crossovers, set PEQs, perform live tuning, and A/B test presets in real-time via WiFi - hearing the difference as you go.
Speaker Cable Note
We recommend using 12 AWG multi-stranded cable without ferrules or 14 AWG cable with ferrules for the Phoenix connectors when wiring the amplifier to your speakers.
Speaker Driver Selection Note
In general, choose speaker drivers that measure close to 4 ohms DC.
They are preferred and more efficient, especially if your goal is to extract the most power from the AC650 powered channels, which perform best with 4-ohm loads.
You can also wire two drivers in parallel to achieve a 4-ohm load when appropriate.
For tweeters and most midrange drivers, 4-ohm or 8-ohm options both work well; their frequency response on and off axis matters more than the impedance.
For less sensitive low-frequency or mid-bass drivers, choosing 4-ohm versions is recommended for improved output and efficiency.
The AC650 Onyx Black comes with these components while supplies last:
- 252W power supply comes standard
- 2 Black Phenix connectors adaptor
- Black and White Cable Ferrules for 14 AWG cable
- 2 black 3dBi antennas for WiFi and Bluetooth®
Specifications:
- Bluetooth® via AAC, AptX-HD and more
- USB Audio 24bit/192kHz
- Optical (S/PDIF) up to 24bit/192kHz
- Coaxial (S/PDIF) up to 24bit/192kHz
- 1-6 Powered Outputs (50W/CH)
- 7-8 Optical (S/PDIF) Outputs
- 9-10 RCA Outputs
8(A-H) presets will store all your custom settings: Tone, Gains, Time Delays, Crossovers, Inverts, EQs and more for each preset. Hear the difference in tuning live with average switch time from preset to preset at 3ms.
New features and updates will be available through the Acoustas App.
Rich Profile:
Features all available modules and the DSP samples at 24bit/96kHz
Pure Profile:
Features core modules only and the DSP samples at 24bit/192kHz
Simultaneous programming 1-10 channels via WiFi
1-10 Channels
0-50ms
High Pass and Low Pass 20-20kHz
Butterworth 6,12,18,24,30,36,42,48 dB/Oct
Linkwitz-Riley 12,24,36,48 dB/Oct
Bessel 6,12,18,24,30,36,42,48 dB/Oct
Live tuning of 1-10 channels
- Frequency
- Gain and Q
- RTA Mode Sliders and Graphs
- 2 Channels up to 24-bit/192kHz Optical
- Up to 50-foot cable at 24-bit/96kHz
- 2 Channels Analog Outputs
- 112dB SNR 2.1V RMS
- Up to 50-foot RCA cable
Technical Specifications:
0.073505% @ 1kHz
62.68dB @ 1kHz
100dB @ 36 Watts into 4 Ohms
25.2V DC - 10A (Onyx)
2- 4 channels simultaneous continuous power maximum
For 252.0 W power supply:
- 4x54W into 4 Ohms
- 4x40W into 8 Ohms
All 6 channels simultaneous continuous power maximum
- 6x37W into 4 Ohms
- 6x37W into 8 Ohms
9" x 7" x 2.6"
3 lb 11 oz
2.4 GHz
New speaker builders get freedom to play with sound anytime like never before. Audio enthusiasts transform existing speakers to active speakers to get the most and best out of them.
Proudly designed and assembled in the USA, the AC650 is backed by a 30-day risk-free guarantee - if you don’t love it, return it in its original condition for a full refund. Plus, we’re here for you with local support from our team in Richmond, Virginia, ready to answer any questions.
As a future-proof solution, the AC650 evolves with regular updates to our app, ensuring you’ll enjoy continuous improvements and exciting new features over time.
Buy 2 or more and get a discount in the cart. Repeat customers get even more.
Acoustas AC650 - Deluxe Mini in Space Black
Notes:
In Stock = 1-3 days to ship
Buy 2 or more and get a discount in the cart. Repeat customers get even more.
Deluxe Mini Edition AC650 comes with the CUI, Inc. power supply standard along with Acoustas custom optical and USB-C cables.
The Acoustas AC650 is a premium DSP amplifier designed for you to have everything you need to build amazing speakers and sound spaces. It is everything you need to start playing with multi driver speakers systems without using a single passive crossover. Direct amplification of each driver.
Speaker Cables Note:
We recommend 12 AWG multi-stranded cable without copper ferrules and 14 AWG with ferrules for the Phenix connector connecting the amp to speakers.
Control of every single driver. With a 10-channel speaker manager and 6 powered channels, it empowers you to fine-tune your system with unparalleled ease. Effortlessly manage crossovers, set PEQs, perform live tuning, and A/B test presets in real-time via WiFi - hearing the difference as you go.
This amplifier offers seamless control through your iPhone, iPad, macOS, Android, and Windows devices. Control everything from volume, tone and presets to each and every channel.
The Deluxe Mini Edition in Stealth Black comes with these components while supplies last:
-
CUI Inc. ultra low noise 200W power supply
- (Note: No IEC 60320 C13/C14 cable)
- Acoustas Optical Cable
- Acoustas USB-C Cables
- 2 Black Phenix connectors
- Black and White Cable Ferrules
- Black 3dBi antennas for WiFi and Bluetooth
New speaker builders get freedom to play with sound anytime like never before. Audio enthusiasts transform existing speakers to active speakers to get the most and best out of them.
Engineered for high quality all-in-one performance DSP Amp, the AC650 features a refined signal path that utilizes I2S technology to transport signal from DSP to the DAC and directly to the clock synchronized ClassD amplification. The signal is kept digital all the way until amplification. This gives you the highest resolution, and virtually no noise, while being able to perform state of the art acoustic algorithms in digital domain to perfection.
Proudly designed and assembled in the USA, the AC650 is backed by a 30-day risk-free guarantee - if you don’t love it, return it in its original condition for a full refund. Plus, we’re here for you with local support from our team in Richmond, Virginia, ready to answer any questions.
As a future-proof solution, the AC650 evolves with regular updates to our app, ensuring you’ll enjoy continuous improvements and exciting new features over time.
Specifications:
- Bluetooth® via AAC, AptX-HD and more
- USB Audio 24bit/192kHz
- Optical (S/PDIF) up to 24bit/192kHz
- Coaxial (S/PDIF) up to 24bit/192kHz
- 1-6 Powered Outputs (50W/CH)
- 7-8 Optical (S/PDIF) Outputs
- 9-10 RCA Outputs
A,B,C, and D presets will store: Tone, Channel Gains, Inverts, Time Delays, Crossovers, and EQs for each preset. Average switch time from preset to preset 5ms.
New features and updates will be available through the Acoustas App.
Technical Specifications:
0.073505% @ 1kHz
62.68dB @ 1kHz
100dB @ 36 Watts into 4 Ohms
6 channels simultaneously continuous power maximum
For 199.2W power supply:
- 30W into 4 Ohms
- 30W into 8 Ohms
For 252.0 W power supply:
- 37W into 4 Ohms
- 37W into 8 Ohms
4 channels simultaneously continuous power maximum
For 199.2W power supply:
- 45W into 4 Ohms
- 40W into 8 Ohms
For 252.0 W power supply:
- 54W into 4 Ohms
- 40W into 8 Ohms
2 channels simultaneously continuous power maximum
For 199.2W power supply:
- 45W into 4 Ohms
- 40W into 8 Ohms
For 252.0 W power supply:
- 54W into 4 Ohms
- 40W into 8 Ohms
- 2 Channels up to 24-bit/192kHz Optical
- Up to 50-foot cable at 24-bit/96kHz
- 2 Channels Analog Outputs
- 112dB SNR 2.1V RMS
- Up to 50-foot RCA cable
- 24 V DC - 8.3A (CUI, Inc. for Deluxe Mini)
- 25.2V DC - 10A (Onyx)
Rich Profile
Features all available modules and the DSP samples at 24bit/96kHz
Pure Profile
Features core modules only and the DSP samples at 24bit/192kHz
Simultaneous programming 1-10 channels via WiFi
1-10 Channels
0-50ms
High Pass and Low Pass 20-20kHz
Butterworth 6,12,18,24,30,36,42,48 dB/Oct
Linkwitz-Riley 12,24,36,48 dB/Oct
Bessel 6,12,18,24,30,36,42,48 dB/Oct
Live tuning of 1-10 channels
Frequency, Gain and Q
9" x 7" x 2.6"
3 lb 11 oz
2.4 GHz
Acoustas AC650's Two Year Warranty
Acoustas AC650's Two Year Warranty
At Acoustas, we value each of our customers and are dedicated to offering the highest level of customer service. We will do our best to address each claim promptly and effectively, working directly with customers to resolve any issues to the best of our ability. We strive to provide personalized support and ensure a positive experience, making sure that our customers receive the best possible solution for their needs. (Link to Warranty Info)
30 Day No Hassle Return Policy
30 Day No Hassle Return Policy
Acoustas Return Policy – Hassle-Free & Customer-Focused
We want you to love your Acoustas purchase, but if it’s not the perfect fit, you have 30 days to return it—no questions asked. As long as your item is in its original condition, in its original packaging, and accompanied by proof of purchase, we’ll issue a full refund to your original payment method. If your product arrives damaged or defective, we’ll take care of it with a free exchange or refund. Just reach out to info@acoustas.com, and we’ll handle the rest! (Link to the Acoustas Return Policy )
Free Shipping
Free Shipping
Acoustas offers free standard shipping on the AC650 Amplifier to all 50 U.S. states, Canada, and all countries where we sell our products. Orders are typically processed within 1-3 business days, with delivery times of 2-3 business days within the U.S., 5-10 business days or faster in Canada depending on customs. If an order requires additional processing time, we will notify the customer via email. Customers are responsible for any applicable duties, taxes, or import fees on international orders. For any shipping inquiries, contact us at info@acoustas.com.
Acoustas AC650 - Deluxe Mini in White
In Stock = 1-3 days to ship
In production = 2-4 weeks (Get on the mailing list to get notified)
The Acoustas AC650 in White combines elegant design with cutting-edge technology, offering a powerful DSP amplifier tailored for speaker builders. Easily convert existing speakers with passive crossovers to active speakers. Have control of every single driver. With a 10-channel speaker manager and 6 powered channels, it provides unmatched flexibility for managing crossovers, setting PEQs, live tuning, and A/B testing presets in real time via WiFi - allowing you to hear the results instantly.
Control is at your fingertips with compatibility across iPhone, iPad, macOS, Android, and Windows (coming soon) devices. Built with premium components, including Acoustas Cables, a CUI Inc. power supply, and a refined White finish, the AC650 ensures both durability and style.
The amplifier’s highly refined signal path, leveraging I2S technology, delivers the shortest possible route from source to signal processor to amplifier. This minimizes noise and maximizes audio fidelity, ensuring your sound is as clean and accurate as possible. Each feature — crossovers, equalizers, and more — has been rigorously tested, with comprehensive measurements and a technical report included to guarantee reliable performance.
Proudly designed and assembled in the USA, the AC650 comes with a 30-day, risk-free guarantee — if it’s not the perfect fit, simply return it in its original condition for a full refund. Our team in Richmond, Virginia, is always available to answer your questions and provide support.
The AC650 is a forward-thinking investment, with regular updates to our app ensuring continuous enhancements and new features, keeping your system at the cutting edge of audio technology.
Specifications:
- Bluetooth® AptX-HD
- USB Audio 24bit/192kHz
- Optical (S/PDIF) up to 24bit/192kHz
- Coaxial (S/PDIF) up to 24bit/192kHz
- 1-6 Powered Outputs (50W/CH)
- 7-8 Optical (S/PDIF) Outputs
- 9-10 RCA Outputs
A,B,C, and D presets will store: Tone, Channel Gains, Inverts, Time Delays, Crossovers, and EQs for each preset. Average switch time from preset to preset 5ms.
New features and updates will be available through the Acoustas App.
Technical Specifications:
0.073505% @ 1kHz
62.68dB @ 1kHz
100dB @ 36 Watts into 4 Ohms
6 channels simultaneously continuous power maximum
For 199.2W power supply:
- 30W into 4 Ohms
- 30W into 8 Ohms
For 252.0 W power supply:
- 37W into 4 Ohms
- 37W into 8 Ohms
4 channels simultaneously continuous power maximum
For 199.2W power supply:
- 45W into 4 Ohms
- 40W into 8 Ohms
For 252.0 W power supply:
- 54W into 4 Ohms
- 40W into 8 Ohms
2 channels simultaneously continuous power maximum
For 199.2W power supply:
- 45W into 4 Ohms
- 40W into 8 Ohms
For 252.0 W power supply:
- 54W into 4 Ohms
- 40W into 8 Ohms
- 2 Channels up to 24-bit/192kHz Optical
- Up to 50-foot cable at 24-bit/96kHz
- 2 Channels Analog Outputs
- 112dB SNR 2.1V RMS
- Up to 50-foot RCA cable
- 24 V DC - 8.3A (CUI, Inc. for Deluxe Mini)
- 25.2V DC - 10A (Onyx)
Rich Profile
Features all available modules and the DSP samples at 24bit/96kHz
Pure Profile
Features core modules only and the DSP samples at 24bit/192kHz
Simultaneous programming 1-10 channels via WiFi
1-10 Channels
0-50ms
High Pass and Low Pass 20-20kHz
Butterworth 6,12,18,24,30,36,42,48 dB/Oct
Linkwitz-Riley 12,24,36,48 dB/Oct
Bessel 6,12,18,24,30,36,42,48 dB/Oct
Live tuning of 1-10 channels
Frequency, Gain and Q
9" x 7" x 2.6"
3 lb 11 oz
2.4 GHz
Acoustas AC650's Two Year Warranty
Acoustas AC650's Two Year Warranty
At Acoustas, we value each of our customers and are dedicated to offering the highest level of customer service. We will do our best to address each claim promptly and effectively, working directly with customers to resolve any issues to the best of our ability. We strive to provide personalized support and ensure a positive experience, making sure that our customers receive the best possible solution for their needs. (Link to Warranty Info)
30 Day No Hassle Return Policy
30 Day No Hassle Return Policy
Acoustas Return Policy – Hassle-Free & Customer-Focused
We want you to love your Acoustas purchase, but if it’s not the perfect fit, you have 30 days to return it—no questions asked. As long as your item is in its original condition, in its original packaging, and accompanied by proof of purchase, we’ll issue a full refund to your original payment method. If your product arrives damaged or defective, we’ll take care of it with a free exchange or refund. Just reach out to info@acoustas.com, and we’ll handle the rest! (Link to the Acoustas Return Policy )
Free Shipping
Free Shipping
Acoustas offers free standard shipping on the AC650 Amplifier to all 50 U.S. states, Canada, and all countries where we sell our products. Orders are typically processed within 1-3 business days, with delivery times of 2-3 business days within the U.S., 5-10 business days or faster in Canada depending on customs. If an order requires additional processing time, we will notify the customer via email. Customers are responsible for any applicable duties, taxes, or import fees on international orders. For any shipping inquiries, contact us at info@acoustas.com.
AC650 Specifications
- Bluetooth® AptX-HD
- USB Audio 24bit/192kHz
- Optical (S/PDIF) up to 24bit/192kHz
- Coaxial (S/PDIF) up to 24bit/192kHz
- 1-6 Powered Outputs (50W/CH)
- 7-8 Optical (S/PDIF) Outputs
- 9-10 RCA Outputs
- iPhone, iPad, Android, MacOS and Windows
- Connect to all devices via WiFi
- Control Volume, Source, Tone and Presets
- DSP Tune up to 10 channels
A,B,C, and D presets will store: Tone, Channel Gains, Inverts, Time Delays, Crossovers, and EQs for each preset. Average switch time from preset to preset 5ms.
New features and updates will be available through the Acoustas App.
Technical Specification
Download Full Technical Report (pdf)0.073505% @ 1kHz
62.68dB @ 1kHz
100dB @ 36 Watts into 4 Ohms
- 54W into 4 Ohms per channel
- 40W into 8 Ohms per channel
- 2 Channels up to 24-bit/192kHz Optical
- Up to 50-foot cable at 24-bit/96kHz
- 2 Channels Analog Outputs
- 112dB SNR 2.1V RMS
- Up to 50-foot RCA cable
- 24 V DC - 8.3A (CUI, Inc. for Deluxe Mini)
- 25.2V DC - 10A (Onyx)
Rich Profile
Features all available modules and the DSP samples at 24bit/96kHz
Pure Profile
Features core modules only and the DSP samples at 24bit/192kHz
Simultaneous programming 1-10 channels via WiFi
1-10 Channels
0-50ms
High Pass and Low Pass 20-20kHz
Butterworth 6,12,18,24,30,36,42,48 dB/Oct
Linkwitz-Riley 12,24,36,48 dB/Oct
Bessel 6,12,18,24,30,36,42,48 dB/Oct
Live tuning of 1-10 channels
Frequency, Gain and Q
9" x 7" x 2.6"
3 lb 11 oz
2.4 GHz
Control
Remote control the AC650:
- Main Volume
- Source Select
- Global Presets (all settings)
- Tone Control
- Left/Right/Center Gain
- More coming soon
Tune
Tune every aspect of the 10 channels:
- Select one or multiple channels to tune
- Turn On/Off, select Left, Right or Center
- Invert by 180 Degrees
- Gain Control, Time Delay
- Crossovers: Butterworth, Linkwitz-Riley, and Bessel 6-48dB/Octave
- FIR Crossovers (coming soon)
- 15-Band Equalizer with imports and exports
- A/B everything in Presets
Devices
- Add new devices via the WiFi network
- See all available devices in one place
- Power On/Off
- Quick Volume control
- Tap on any device to go into the Control Tab
Acoustas App
The Acoustas App connects via Wi-Fi to control and fine-tune both the overall sound and each individual channel. With its powerful Presets functionality, you can A/B test settings effortlessly, achieving fast, audible results. The app makes audio system tuning intuitive, rewarding, and — most importantly — 100% fun.
Scan to go to App store.
Scan to go to Play store.
Acoustas App on Mac App store.
Windows App
Now available for Windows
Let customers speak for us
I bought this unit to help with a large 3 way horn project where I wasn’t sure what the crossover points would end up being and with the length of the horn I knew I would need some time correction. Enter DSP. The 6 amplified channels are perfect for this project and the mix of other outputs has me thinking about easy future enhancements.
What I didn’t expect was how easy and convenient it is to use. The app lets you adjust everything in real time for an immediacy I’ve not experienced before. I’m looking forward to interactively measuring and tuning my build. The way it works allows for all kinds of remote placements as well. If you have wifi, you can wake it up remotely and enjoy it. No need for line of sight with an IR remote.
Honestly, this thing is awesome for loudspeaker development but having used it, I now see lots of other applications I can use it for as well. Thank you Acoustas for thinking outside the box and bringing something unique to the market.
App is very easy to use, well written. Amp does exactly what is supposed to do, very compact with high quality construction. As a DIY speaker builder, I am using the amp to identity crossover parameters for optimal performance before designing a passive crossover - so much better than trial and error. It is a well designed, excellent product and I expect to use it for additional purposes over time.
Just hooked up unit to a three way system. Heil ESS tweeter, Morel carbon fiber midrange, Peerless 10 inch woofer. Sounds great and the flexibility is amazing. Have not had a chance to do measurements yet, so the potential is greater than an already excellent sound. Highly recommended.
I haven't been this excited in a long time after making an audio purchase! Received my unit and am blown away with the build quality, not to mention this thing could have survived any kind of shipping thrown at it. Very well packaged! I am in the process of building some speakers and will be utilizing the unit for power and crossovers. Can't wait until everything is all done! Thanks for making the process very easy from ordering to delivery to a very well executed product!
I wanted to include some pics. These custom speakers are far from perfect, but I have them bi-amped and have been tuning them with the AC650 phone app along with REW and a measurement mic and it is incredible how many imperfections I was able to fix with these old speakers. Next up, using the extra 2 channels to power some old music monitors and then getting these speakers integrated into my digital mixer for music jams!
Note the AC650 is sitting on the right leslie. The big black and blue speakers are the ones powered by the AC650 right now.
I wanted modern features with my vintage phono setup and the AC650 is perfect after I added a AD converter to get my phono preamp to optical.
This system alone can run 3 sets of my favorite old speakers all over the house. That clears up my other AC650 for workshop so I can continue to tune of custom and vintage speakers.
It felt a little strange at first because even with the phono preamp and receiver there was still virtually no noise. The AC650 is so clean and clear it sounds great paired with the vintage speakers for a amazing and fun turntable setup that you can still just use bluetooth and spotify if you want to be lazy!
Im looking forward to doing some speaker and room measurements and really tuning this in.
I took a leap of faith on the amp since I've never heard of the brand before but really liked the concept and it's built in USA. Ever since getting it, I've been listening to it latterly everyday and one way or another. I have first tri-amped my Klipschs RP-8000F II with it since I thought I can get more out of them, bypassing their crossovers and wow what a difference. I set my own crossovers and did my own measurements. Now I am finishing my build of my own 2.5/3-ways and I am never going back. I really like how everything is implemented, just simple and the sound is really neutral like a clean canvas or I can add or subtract and shape it to wherever I like. Very soon here I'll be getting another one specifically for my build.
Just got this Amp on Friday and had the weekend to play with it. It was fairly easy hook up my Maggies to it and to get it on my Wi-Fi network. Once I did, what a change. The sound is really transparent with new level to the soundstage. I played with the controls and I feel like I've got it. it is handy to control everything from my phone. Tuned in just right. It is a major improvement over my Technics SU-G700M2 that I like very much as well but after playing around with the settings, there is a big difference. It sounds so much more open and real. Live music is my favorite so far. We listen/watched Kacey Musgraves live in studio consert and wow what a difference it was lovely.
The only thing I will need to figure out is the phono input. That's the only thing I think is missing. However, I am thinking about the Music Hall PA2.2 I might try that one since it has USB out. The Pro-ject Optical Box E looks to be good option but need to do more homework. Anyway so far so good. The app implementation is by far the best I've ever tried on any audio gear. I mostly use it to control the basics like on Austin volume but there's so much you can do. It's pretty exciting actually. I'm really happy with it so far.
I just got my second AC650 Amplifier. It sounds great, set up is easy, being able to bi-amp old speakers and tune them is amazing. One of my AC650s will run our living room speakers as well as some kitchen speakers. The second AC650 is for testing/workshop purposes as well as running my homebuilt studio monitors in biamp mode and maybe triamp with some subs. Really excited to get these tunes up and sounding better than ever!
From a technical perspective this amplifier is amazing, instantly works with computers, bluetooth, any usb type device, Has insanely low noise, 6 Channels @50 Watts, it sounds amazing, I had previously been using a cheaper digital amp and was happy with it, but this is way better, and again the app and setup is so easy to use.
I will update this review as I learn more, but already convinced it is a great deal.
I've had it for just over 2 months and I built a three-way stereo system using SB audience and Purifi drivers. I love how you can just tune everything using the app. It is so fast I can AB anything. If I mess anything up, I can just go to one of my presets and I'm right back. I used REW to measure each drivers and tuned with the DSPamp. Highly recommend it!
I've been building speakers for the last 10 years and this amp is exactly what I was looking for. It sounds absolutly incredible. Extremely detailed and holographic sound. There is zero noise even at full volume. The app is well thought out. I am super happy all around with the quility of sound especially. The customer service is the best I have ever experienced. They actually picked up the phone and literally walked me through everything and gave me tips on the type of crossovers and settings to try with my set up. I went with the recommendation of using Linkwits and Rily 12dB/Octave and inverting one of the drivers. Wow, it sounds good. I have AC650 in black amps since Christmas of 2024 and we play this amp everyday and love it. Will defenitly get another one for the next project I have to pick out the speakers first. Anyways, keep up the good work.
This DSP amplifier is nothing short of a masterpiece and an incredible value for the price. I opted for the white finish to match my studio, and it looks stunning. Honestly, I wouldn't be surprised if the price goes up as more people discover just how good this amp is.
Since integrating it into my setup, my studio sound amazing. It's completely blew my mind and the band. I'm recording right now. Previously, I was using ARC for room correction, which worked well, but switching to REW paired with this amp has been a game-changer. The level of control this amp offers is remarkable. I can fine-tune everything driver crossovers, time alignment, and per-driver EQs all in real time.
Now the soundstage feels significantly deeper and more natural. Instrument placement is precise, and the overall listening experience is on another level. The ability to tweak settings live makes it an absolute joy to use.
Virginia
Designed and Assembled in USA
We design, assemble, and test each AC650 in Richmond, Virginia, USA. We stand by our quality and strive to provide the best possible acoustic experience and customer service.
FAQ
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How long will it take to get my orders?
It depends on where you are. Orders processed the same day and will be delivered 2-5 business days to arrive with in the lower 48 states. Delivery details will be provided in your confirmation email.
Any question?
You can contact us through our contact page! We will be happy to assist you.