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Since the late 1980s, Dr. Arthur Loesch has been a major figure in the revival of the Single-Ended Triode (SET) amplifier for home audio use.   The Model 301 Mono Amplifier features a single 300B or Type 50 output tube, in either 2-stage or 3-stage configuration. The filament voltage for the 300B and 50 power tubes can be switched externally, making them interchangeable with the flip of a switch. Designed for loudspeakers with a minimum efficiency of 94dB/1m, installing either power tube will easily drive your speakers to satisfactory SPL levels in most listening rooms.   Sonically, the Model 301 redefines the sound of the 300B, for which it's primarily designed. Highs are clear, detailed and undistorted; the midrange is full, rich, and vibrant; and the bass is bold and deep, with an impact usually attributed to solid state equipment. Sound staging is wide, deep, and three-dimensional. These amplifiers present music with the snap and timing of a live performance, sailing through the most difficult recordings, as they lift the last veil between you and the stage.   Features include: Tango or Tamura Output Transformers, Tango Interstage and DC Filter Transformers Transformer coupling throughout the audio section, with no capacitors directly in the signal path Custom made, universal AC Transformer for 120V or 240V worldwide operation WBT-0210 Ag NextGen Fine Silver RCA Sockets WBT 0710 Ag NextGen Fine Silver Binding Posts Zero Negative Feedback Pure Class A Performance Teflon® insulated, pure silver wire throughout the audio signal path. Teflon® insulated, silver-plated copper wire throughout the power supply. High Tone Teflon® and Ceramic Tube Sockets Teflon® and Polypropylene Capacitors throughout (no electrolytics) Caddock MS Series Power Resistors Furutech 15A IEC Teflon® Power Inlet Shielded, 14 Gauge Quail detachable power cord included Optional 12 Gauge, double-Teflon® insulated, CS Power Cord available as an upgrade Soundcare® SuperSpikesTM for increased isolation from airborne and mechanical feedback Rear Plate: WBT NextGen RCA single-ended and Furutech balanced inputs, WBT Top Line binding posts for Common, 4, 6, 8, and 16 Ohm taps (WBT NextGen Ag available as an upgrade), DC and AC circuit breakers, and 15 Amp Furutech IEC power inlet, machined from solid Teflon.®   Specification Model 301 mono Amplifier Impedance Input = 100K Ohms Output = 4, 6, 8, 16 Ohms Tubes   Input (3-stage version only) 12AU7 / ECC82 Driver (3-stage version) 6350 Driver (2-stage version) 417A Rectifier 5AR4 / GZ34 Output 300B or 50 Power (Pure Class A)   300B 8 Watts per Mono Amp 50 4 Watts per Mono Amp Power Consumption 112 Watts @ 1.10 Amps per Mono Amp Power Supply   AC Mains Input 120V @ 60Hz or 240V @ 50Hz, user switchable On request, the power supply can be wired for 100V, 110V, or 220V at no extra charge. Dimensions   Size 16.75" Wide x 12.0" Deep x 10.0" High (425mm Wide x 305mm Deep x 254mm High) Net Weight 45 lbs. (20.45 kg) each Prices Plus shipping from Saratoga Springs, NY, 12866 USA Amplifiers Only $10,000 per pair (Tango Output Transformers), without tubes $11,000 per pair (Tamura Output Transformers), without tubes These price is subject to change, depending upon the availablility of the output transformers, as well as custom modifications Premium 300B Tube Package (3-stage version) +$1200 per pair of amplifiers, including new Emission Labs 300B, NOS Sylvania or Philips ECG 5AR4, NOS Black Glass Tung Sol 12AU7, and NOS Sylvania 6350 Tube prices may vary subject to availability. Premium 300B Tube Package (2-stage version) +$1300 per pair of amplifiers, including new Emission Labs 300B, NOS Sylvania or Philips ECG 5AR4, and NOS Western Electric 417A Tube prices may vary subject to availability. Power Cord Upgrade Upgrade the standard 14 Gauge shielded power cord to our 12 Gauge double-Teflon® insulated, CS Power Cord, featuring WattGate Audio Grade terminations. +$250/6 feet, +$10 each additional foot, per amplifier Availability Built to order only. There is a lead time of 2 - 4 months, with a 50% deposit required at the time of your purchase.   Contact us to arrange for an audition at our Troy, New York, listening room or for an in-home audition. Certain restrictions apply. All prices, features, and specifications are subject to change without notice.   Tempo Electric LLC PO Box 770 Saratoga Springs, NY 12866-0770 USA (518) 542-7004 The best time to reach us by telephone is 10AM-6PM, US Eastern Time. If you reach our voicemail, please leave a message with the best time to return your call. You can always contact us by eMail, instead. Either way, we will try to reply within 24 hours.