FS: A Pair of Cyrus Mono X Power Amplifiers in Quartz Silver [SOLD]

For sale: Two Cyrus Mono X power amplifiers in quartz silver. I’d like £830 including postage.

These two amplifiers are in very good condition.

The amps come with all the original packaging, including mains lead, MC-BUS cable for linking the amps to other Cyrus gear, and the user instruction manual.


Inputs – RCA phono or XLR balanced
Outputs – Twin BFA (bi-wire) connectors, RCA Chain out
Power Supply – 330VA Toroidal transformer
Communications – MC-BUS System Bus

Continuous Power – 150W (into 8 Ohms) 240W (into 4 Ohms)
Burst Peak Power – 1500W
Distortion – <0.004%, (1kHz into 8 Ohms) <0.05%, (20Hz-20kHz into 8 Ohms)
Frequency Response – -3 dB at 0.5Hz and 130kHz
Slew rate – 700V/µS (filters bypassed)
Max output Current – 80 Amps peak to peak
Sensitivity (RCA input) – 380mV (for 50W into 8 Ohms)
Sensitivity (RCA input) – 660mV (for 150W into 8 Ohms)
Sensitivity (BAL input) – 775mV (for 50W into 8 Ohms)
Sensitivity (BAL input) – 1.3V (for 150W into 8 Ohms)
Input impedance – 19Kohm (RCA), 20Kohm (BAL)
Chain Output voltage – 660mV (for 660mV RCA or 1.3V BAL input)
S/N Ratio – 114dBA
Dimensions – (H x W x D) 73 x 215 x 360 (mm)
Weight – 5.5kg
Finish – Quartz Silver

More information can be found On the Cyrus Audio website:

Mono X – Cyrus Audio