• Class AB Ultralinear Output Stage tube amplifier with low (9 dB) feedback.
  • Compatible with many tube types: 6L6GC, KT66, KT77, EL34, E34L, 6CA7, 6550, KT88 and KT90.
  • Capacitor multiplier circuit used for input and driver stages to minimize noise/hum.
  • American made custom power and output transformers.
  • 4 & 8Ω output taps utilizing custom made McGary Audio gold plated binding posts.
  • Gold plated RCA input connections located on the rear panel.
  • American made 13-Gauge steel enclosure…powder coated throughout (Midnight Blue metallic base with satin black top plate is standard color scheme for SA1E).
  • Russian made ceramic tube sockets with silver plated terminals (attached directly to the chassis).
  • Point-to-point and tagboard hand wired construction with 16-gauge Teflon insulated silver plated copper wire, Cardas silver solder for all electrical connections, Solen Teflon/Film Foil, Wima and Nichicon Muse capacitors, and Vishay precision metal film resistors.
  • Detachable IEC power cord not supplied.
  • Standard tube complement: (2) NOS JAN General Electric (6BQ7A) input and (2) NOS General Electric (6SN7GTB) driver vacuum tubes, (4) Russian KT90 matched quad EHX output vacuum tubes. Other output tube types are available upon request.
  • Self-bias output tubes require no bias adjustments. 
  • Timed delay relay surge controller for slow start turn-on and increased tube life.
  • Potted power transformer for silent operation.
  • Electrical Engineer designed and hand built in Gainesville, Virginia 
  • Lifetime warranty (excluding the vacuum tubes- 90 day warranty from date of purchase)



  • 30W rms (THD +N is less than 0.25%), 40W rms (THD +N is less than 2.5%) waveform clipping (8Ω) using KT77 output tubes, 45W rms using KT90 tubes
  • 20Hz – 20kHz (+/-0.2dB) bandwidth
  • Input Impedance: >90kΩ
  • Sensitivity: 0.875V rms for rated output power
  • SNR: > 85 dB unweighted/unfiltered & referenced to full rated output power at 1kHz into 8Ω
  • Phase: Non-inverting
  • Dimensions: D= 13”, W= 17” and H= 8.5”
  • Power consumption: ~300W (depends on output tube type used)
  • Fuse: 3.5A
  • Weight: 46 lbs
  • Power: 120V-60 Hz/240V-50Hz (electrically configurable, please inquire if purchasing product for use outside the USA)