AudioChainsDB
Emotiva

BasX A7+

amplifier

$999

Used market: $720*

Manufacturer datasheet

Specifications

3 of 5 values have a recorded source
Amp Type
Power Amp·
Channels
7·
Speaker Outputs
5-Way Binding Posts·
Power Output Per Channel
{"thdPercent":0.02,"continuousWatts":90,"loadImpedance_ohms":8}, {"thdPercent":1,"continuousWatts":125,"loadImpedance_ohms":4}✓
Min Supported Impedance ohms
4✓

Expert Audio Engineering Commentary

Headroom Notes

The recorded figures are the all-channels-driven ones: 90 W into 8 ohms, 20 Hz - 20 kHz, THD <0.02 %, and 125 W into 4 ohms at 1 kHz with 1 %. Emotiva also publishes a two-channels-driven pair, 120 W and 175 W, without stating bandwidth or distortion for either; that pair is the more flattering one and is not what a seven-channel soundtrack asks of the amplifier.

Thermal Behavior

'Minimum Recommended Load Impedance (per channel): 4 Ohms (equals one 4 Ohm speaker or two paralleled 8 Ohm speakers)' - the parenthesis is the useful half: it tells you what running two pairs off one channel actually costs.

* Estimated with the depreciation fallback (~72% retained value). · checked on 8/5/2026