Check the listing for details. VAS Citation-2 Monoblock Power Amplifiers. Listed at 3500.00 USD. VAS Citation-2 Monoblock Power Amplifier Pair Built for US, 120VACComes with EL34 tubesHas 3 year warranty on parts and services, 90 days warranty on tubes from VASYou can contact me if you are interested or want to offer, or you can search "vasnyinc" for more infoThe VAS Citation-2 tube mono block amplifier is a Harmon/Kardon Citation II design. This classic is reborn with top-of-the-line components, hand wiring and state-of-the-art transformer technology. They pack a punch in a compact size, driving almost any speaker with ease. Technical specifications: Device:Mono block power amplifierFrequency range:10 Hz - 45 kHz (+/- 0.5 dB)Total harmonic distortion (THD):0.3% (1 kHz)Unweighted signal-to-noise ratio:91 dBInput impedance:110 kOhmOutput impedance:4, 8 OhmInput sensitivity:650 mVOutput power (RMS):50 Watt @ 8 Ohm (Ultralinear) 25 Watt @ 8 Ohm (Triode)Input power:110 WattDimensions:8.00 x 5.75 x 17.50 inWeight:31 lb