Art Audio Quartet 845 Push Pull 45w Mono Block Amplifier (pair)

  See full review by Dr. Michael Bump at Enjoy the Music http://enjoythemusic.com/superioraudio/equipment/1119/Art_Audio_Quartet_Vacuum_Tube_Monoblock_Amplifier_Review.htm   When we were looking to design an amplifier that could deliver the power of push pull designs and the sheer musicality of lower power single end designs, we settled for the 845 push pull combination and the Quartet was born. The 845 is a am amazing tube and in many ways is the soundstage king of valves.  These amps provide a wide and deep soundstage with incredible imaging.   The Quartets are wonderfully musical amplifiers with lots of power and with the high frequency extension of a 300b.  They are fitted with MKP capacitors and carbon film resistors.  These amps also feature automatic biasing and have a solid state, twin choke, filtered power supplies. Rectified dc heater supply with twin pye filters. Auto bias set for 85 mA @ 750v.  Solid state twin choke power supply. Specifications: Power – 45w Per Channel Type - Push Pull 845 Power Tube Frequency Response - 10hz to 65,000hz +/- 0.5dB at 1W Frequency Response - 20hz to 50,000hz +/- 1.0dB at Full Power Input Sensitivity - 700mv Input Impedance - 180 KΩ Output Impedance - 4 & 8Ω Noise at Speaker Terminals - Typically 3mv Feedback – 6dB Biasing – Automatic Electronic Rectifier - Solid State Drivers - ECC 82 and 12BH7 Available with multiple options Black or Silver Chassis Glass Lums Blue Lights Legs This product is made to order in the UK.  Delivery typically takes 4-6 Weeks.