Cypher Labs Sustain84 Desktop Tube Amplifier NEW

Featuring NOS ECL84 tubes in a class A single ended design, the Cypher Labs Sustain84 (model CLS84) is a headphone enthusiast’s dream. Designed specifically for headphone amplification, the Sustain84 has a pure black background. The power band is suitable for the most sensitive IEM’s and the most demanding planar magnetic headphones. We chose Z11 Output Transformers from Japan as well as Nichicon Electrolytic Capacitors and Cardas RCA input connectors. We incorporated a specially designed switching power supply and quality fuse for ultra low noise. Many power amps feature a headphone output, but the Sustain84 is an Uncommon amplifier of headphones.

The background is dead silent and the audio extremely clear reference grade. As you expect from Cypher Labs.


Tubes: ECL84 (6DX8 tubes may be substituted by the customer)
Input: RCA Jacks
Input Impedance: 10K ohms
Input Sensitivity: 700mV
Output: 6.3mm
Output Impedance: 8 to 600 (Japan Z11-EI48 Output Transformers)
Output voltage: 14Vp-p
Frequency Response: 30-30Khz (+-1db)
Switching AC Voltage: 100-250V AC
Power Consumption: 20W
AC: Standard IEC input with fuse protection (2A Fuse)
Weight: 2.5kg
Dimensions: 225mm (w) x 116mm (d) x 113mm (h)
0.08W/600 ohms; 0.16W/300 ohms; 0.36W/100 ohms; 1W/32ohms
Low gain 2db, High gain +17db
Power cable included
Machined aluminium enclosure
Removable tube shields