Acoustas AC650 DSP Amplifier - in Onyx Black
Acoustas AC650 DSP Amplifier - Onyx
The Acoustas AC650 in Onyx is a high-performance DSP amplifier meticulously designed for speaker builders who demand precision, versatility, and value. Featuring a 10-channel speaker manager and a 6-channel amplifier, it provides all the tools needed to fine-tune multi-way speaker systems. From configuring crossover points to applying a 15-band PEQ per channel, the AC650 gives you the power to craft your ideal sound right from the palm of your hand.
Easily control your system via WiFi using iPhone, macOS, or Android devices. The AC650 is built with a refined signal path utilizing I2S technology, ensuring the shortest and cleanest route from source to signal processor to amplifier. This innovative design minimizes noise and maximizes audio fidelity, delivering an immersive listening experience comparable to premium Hi-Fi systems at a fraction of the cost and 100% more fun.
Every feature, from crossovers to equalizers, is rigorously tested and supported by detailed measurements and a comprehensive technical report, ensuring reliable, consistent, and professional-grade performance.
Proudly designed and assembled in the USA, the AC650 comes with a 30-day risk-free guarantee. If it doesn’t exceed your expectations, simply return it in its original condition for a full refund. Additionally, our team in Richmond, Virginia, is always available to answer your questions and provide expert support.
As a future-proof solution, the AC650 evolves with ongoing app updates, introducing new features and enhancements to ensure your system remains at the forefront 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
Customer Reviews
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 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.
Customer Reviews
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 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.