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.
An acoustic frontier.
Hear what's possible with AirDSP.
Built in Richmond. Tuned by you.Built around AirDSP.
Adjust every filter, every channel, every parameter in real time, from your phone or laptop. Underneath, the AC650 is a 6-channel DSP amplifier with an end-to-end digital signal path. Conversion to analog happens only at the final power stage and the RCA DAC, for the cleanest signal-to-noise ratio across the chain.
From 2-way to 4-way active builds, most often a 3-way. Drive a stereo pair plus subs, or take an existing passive design and tune it driver-by-driver. With REW import and FIR filtering, the measurement loop closes in minutes, not weekends.
- Powered channels
- 6 × 50W
- Line outputs
- 2-CH Optical 24/192 · 2-CH RCA
- IIR
- 15-band PEQ · Time delay · Crossovers
- FIR
- FIR Builder · FIR Vault · Linear-phase
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Powered amplifiers · 1-6
50W per channel. Independent on/off, invert, gain, time delay, crossover, and 15-band PEQ. FIR and IIR processing both available.
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Optical out · 2-CH
Digital out at 24-bit / 192 kHz. Per-channel IIR controls. FIR is not available on these channels.
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RCA out · 2-CH
Analog line-level out via internal DAC. Full DSP including FIR and IIR per channel.
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Inputs
Bluetooth aptX-HD, USB audio, optical, and coaxial. All up to 24-bit / 192 kHz.
- THD+N
0.073505% @ 1kHz
- Signal-to-Noise Ratio
100dB @ 36 Watts into 4 Ohms
- Amplification
- 54W into 4 Ohms per channel
- 40W into 8 Ohms per channel
- Optical Output
- 2 Channels up to 24-bit/192kHz Optical
- Up to 50-foot cable at 24-bit/96kHz
- RCA Output DAC
- 2 Channels Analog Outputs
- 112dB SNR 2.1V RMS
- Up to 50-foot RCA cable
- Power Supply
- 24 V DC - 8.3A (CUI, Inc. for Deluxe Mini)
- 25.2V DC - 10A (Onyx)
- DSP Profiles
FIR Profile · 24-bit / 48 kHz (recommended)
All AirDSP modules including FIR Builder and custom FIR capabilities.
Rich Profile · 24-bit / 96 kHz
All AirDSP modules, excluding FIR capabilities.
Pure Profile · 24-bit / 192 kHz
Core AirDSP modules at the highest sample rate.
- Max Channel Programming
Simultaneous programming 1-10 channels via WiFi
- Channel Invert
1-10 Channels
- Channel Delay Time
0-50ms
- IIR Crossovers
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
- FIR
Crossover types: Linkwitz-Riley · Invisible · NTX-Pro · Linear-phase
Tools: Phase Linearizer · REW import/export · rePhase
- 15-Band Equalizer
Live tuning of 1-10 channels
Frequency, Gain and Q
- Dimensions
9" x 7" x 2.6"
- Weight
3 lb 11 oz
- WiFi
2.4 GHz
Tune in real time, on every platform.
AirDSP is the AC650's control surface. FIR Builder, parametric EQ on a graph, REW import, per-channel time delay, and 8 presets per device. Free, included with every amp, on every platform you already have.
Designed and assembled in Richmond, Virginia.
We design, assemble, and test every AC650 in our Richmond facility. Each unit is measured before it ships.
AC650 DSP Amplifier - Onyx Black
6-channel DSP amplifier with an end-to-end digital signal path. AirDSP control included. Designed and assembled in Richmond, Virginia.
$899.99
- Channels
- 6 × 50W
- Processing
- FIR + IIR
- Control
- AirDSP, free with every amp
- Warranty
- 2 years
Free shipping. 30-day return. 2-year warranty.
Truly unique combination of capabilities, quality and level of integration, no real competition exists for the AC650 as you get full, easy to use control over the drivers (6 minimum, more with external amp). Direct import of REW filters is a killer. The software makes DSP control a breeze. True one stop shop with no obvious weak spots.
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.
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.
What kind of DACs are used on the 6 channels of the AC650?
The AC650 doesn't use conventional DAC at all. It is fully digital though the entire chain all the way up to the very last stage. It is PCM to PWM → High-Power Class-D Output Stage (MOSFET H-bridge) configuration.
How long of cable can I run?
As long as you need - however, there will be some power loss. As an example:- For 14AWG and a 4-ohm load/speaker, you will get 95% of the power at 42 feet per channel- For 12AWG and a 4-ohm load/speaker, you will get 95% of the power at 66 feet per channel
What kind of cable is ideal for the Phoenix connector?
We recommend using ferrules with the speaker cables before inserting them into the terminal blocks. You can insert ferrules up to 14 AWG
Also you can use bare speaker cable without ferrules up to 12 AWG directly into the terminal blocks.
Note: If using bare wire, take caution to avoid shorts by strands on adjacent terminals.
I don't have a Windows account. Can I download AirDSP for Windows?
Yes. You can download the stand-alone version of AirDSP for Windows 10/11 here.
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