Zesto Audio Bia 120

Zest Audio BIA 120 pure class A amplifier. Very highly rated. HARDLY USED. Less than 80 hours use. Beautiful  condition. 
 Bob Levi from Positive Feedback online:

"Groundbreaking! Powerful! Huge dynamics! Distortion Free! Ultra quiet! More definition than my system has ever produced! Realism at new levels of perfection! Perfect highs, perfect mids, perfect bass! Dimensional without boundaries! Micro dynamics are spectacular! Faster than any tube amp ever! Textural cues are perfection! Most neutral tube amp ever created! Best imaging of any amp at any price. Unequaled clarity. Gigantic soundstage.

Impossible to distinguish whether tube or solid state! Most important tube amp produced in a generation! MSRP is grossly undervalued with performance equal to or exceeding $50,000 amplifiers! Beautiful styling and very fine fit and finish! Not too large and not too heavy at 66 pounds!"

Specifications

Output

• Pure Class A

• 60 Watts per channel

• 4, 8 and 16 Ohm output taps

• 8, 5 and 4 Amp Slow blow fuses for outputs

• Eight 5-way binding post

• Non inverting output polarity  

• Push-Pull and Ultra-Linear design

Inputs

• Transformer floating balanced XLR inputs

• Left and Right SE inputs with an impedance of 100K Ohms 

• Left and Right BAL inputs (pin 2 hot) with impedance of 12K Ohms

• Independent ground lift switches on left and right BAL inputs

• 2 Volts RMS input to reach rated output

Detailed Specs

• Dual Mono

• Auto bias

• No negative feedback

• Frequency response 20Hz to 50kHz ~ 1dB

• Total Harmonic Distortion ~ 0.22% at 1W output into 8 Ohms

• Gain of 23dB

• Noise level > 0.2 mV RMS into 8 Ohms with input shorted

• 1% metal film resisters throughout

• Polypropylene capacitors throughout the audio path

• Power

• Custom toroidal power transformer with global mains

• Choke based power supply design

• 120 Volts AC mains 

• Optional factory installed 220V, 230V, 240V 50/60Hz

• Power consumption at rated output 300 Watts

• On/Off switch conveniently located on front panel

• 3 pin IEC power connector with fuse