If you are seeking the pure Class A, single ended tube sound, the Z40 is a very highly rated amp to deliver that sound. Reviewed and rated to be one of the most true sounding amps, with 0dB local and 0dB global negative feedback. Articulated bass and high ends, wider dynamic range and frequency response than many other SET amps.
At 20Wpc with two EL34 Winged "C" (SED) parallel output tubes per channel, overrated output and power transformers, this amp is built to be your last tube amp.
The unit is 9/10 because it has been in use for very light demoing, less than 50 hours. Original packaging, manual, warranty, no scratches or marks, new tubes. The asking price is a true bargain for a brand new amp!
* 2 x 20Wpc RMS pure Class A/SET
* 4 or 8 ohm speaker load
* THD: 0.2 at 1W, less than 1% at 20W RMS
* 1.5Hz to 30KHz (-3dB) bandwidth
* 2 x 12AU7, 2 x 12AX7 and 4 x Winged C EL34 tubes
* No negative feedback
* Direct coupled input and inter-stage
* Auricap capacitors
* Toroidal power transformer
* Potted, overrated output transformers (50Wpc rated)
* Exclusively metal film resistors
* 4000 uF filtering capacitors
* One year warranty
Serial number: Z40-02
Manufacture date: 10/4/2011
More information can be found on www.zinfinityaudio.com.