Phoenix Speaker Terminals in Black for AC650
Now with a new FIR profile. Six powered channels. AirDSP control over Wi-Fi. Engineered to get the most out of your speakers.
Connects up to 3 audio channels on each Phoenix Speaker Terminal. Included 2 sets of 2 Phoenix Speaker Terminals in Black - 4 total.
- For up to 12 AWG raw cable - with out Ferrules
- Also ideal for AWG 14/2.5mm² Ferrules(recommended) - Insulated Copper Crimp Connectors - use square ferrule crimpers for best results.
- Inputs
- Bluetooth® via AAC, AptX-HD and more
- USB Audio 24-bit / 192 kHz
- Optical (S/PDIF) up to 24-bit / 192 kHz
- Coaxial (S/PDIF) up to 24-bit / 192 kHz
- THD+N
0.073505% @ 1 kHz
- Signal-to-Noise Ratio
100 dB @ 36 W into 4 Ohms
- Amplification
- 54 W into 4 Ohms per channel
- 40 W into 8 Ohms per channel
- Optical Output
- 2 channels up to 24-bit / 192 kHz
- Up to 50-foot cable at 24-bit / 96 kHz
- RCA Output DAC
- 2 channels analog outputs
- 112 dB SNR · 2.1 V RMS
- Up to 50-foot RCA cable
- Power Supply
Onyx: 25.2 V DC · 10 A · 252 W
Deluxe edition / White: 24 V DC · 8.3 A · 200 W (CUI Inc., ultra-low-noise)
- 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 of 1–10 channels over Wi-Fi
- Channel Invert
1–10 channels
- Channel Delay Time
0–50 ms
- IIR Crossovers
High Pass and Low Pass 20–20 kHz
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
Engine: 1,500 taps per channel · 8 channels (6 powered + 2 RCA)
Crossover types: Linkwitz-Riley · Invisible · NTX-Pro · Linear-phase
Tools: Phase Linearizer · REW import/export · rePhase
- Presets
Stores: Full DSP state, now including FIR and Groups.
Switching: Near-instant between presets. Slightly longer when the preset includes FIR.
- 15-Band Equalizer
Live tuning of 1–10 channels
Frequency · Gain · Q · RTA mode
- Dimensions
9″ × 7″ × 2.6″
- Weight
3 lb 11 oz
- WiFi
2.4 GHz
What changes between editions.
Common questions
Is 50 W per channel enough for my build?
The AC650 is sized for active speaker builds, desktop and studio systems, and efficient drivers in normal listening rooms. For high-SPL builds or low-sensitivity woofers, use the RCA or optical line outputs to feed external amplification while keeping AirDSP control of the full chain.
Why is there no analog input?
The AC650 runs an end-to-end digital signal path. For turntables or analog preamps, run a phono preamp into a USB audio interface or optical converter, and the AC650 handles the rest.
Are Phoenix connectors a problem?
Phoenix connectors are compact, secure, and serviceable. They keep the rear panel clean while supporting multi-channel active builds. We recommend ferrules on cables up to 14 AWG, or bare wire up to 12 AWG directly into the terminal blocks.
Is this too advanced for me?
Use the AC650 like a normal amplifier on day one. When you're ready to tune, AirDSP opens crossovers, delay, parametric EQ, REW import, and FIR. Start at any depth, go deeper at your pace.
How reliable is the AirDSP app?
AirDSP ships on iOS, Android, macOS, and Windows. All four platforms get free updates. Support comes directly from the team in Richmond, Virginia.
What's the return policy?
30 days. If there are any issues whatsoever, the replacement is free. We'll work with you until you're fully satisfied.