• Purist Design/Modified Mu-Follower Class A Tube Stage Preamplifier with no feedback
  • Compatible tube types: 6N1P, 6N5P, 6CG7, 6FQ7, 6BQ7A
  • Extensive power supply filtering using Nichicon audio grade capacitors
  • 4 pairs of RCA gold plated unbalanced input connections, and 2 pairs of RCA gold plated unbalanced output connections
  • American made 13-Gauge steel enclosure…powder coated throughout with gloss Midnight Blue metallic base, Satin Black top plate and Metallic Silver ink lettering.
  • Removeable tube cover vent plate 
  • Ceramic tube sockets with silver plated contacts (sockets 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
  • Mundorf polypropylene capacitors and Vishay/Dale precision metal film resistors utilized
  • Remote controlled ELMA 47-position precision stepped stereo attenuator using 0.1% thin film resistors (volume motor utilizes separate power supply)
  • Ergonomic design LED backlit soft touch control knobs
  • ELMA gold plated switches 
  • Detachable IEC power cord connection (no power cord supplied)
  • Tubes: 6N1P matched pair 
  • Electrical Engineer designed, hand built and tested solely by Mike McGary in Gainesville, Virginia 
  • Lifetime Warranty (excluding the vacuum tubes- 90 day warranty from date of purchase)


  • Gain: 28dB using 6N1P tube (tube type dependent)
  • Maximum Output Voltage: 35 Volts (Bypass), 5 Volts (Low), 10 Volts (High) with 1.3 Volts input and 100 kΩ load
  • Max Input Voltage: 1.3 Volts (~0.9 Volts RMS)
  • Input Impedance: >48 kΩ (sensitivity setting and frequency dependent)
  • Output Impedance: 1.8 kΩ (typically)
  • SNR: > 90 dB unweighted (22Hz – 22kHz)
  • Hum and Noise (with input grounded) 400 microvolts
  • Frequency Response: 3Hz – 40kHz (-1dB)/ 1Hz – 72kHz (-3dB) Volume at midpoint setting with less than 0.15% THD; Volume at max setting with less than 1% THD
  • Phase: Inverting
  • Dimensions: D= 13”, W= 17” and H= 3”
  • Power consumption (idle): ~ 20 Watts (tube dependent)
  • Weight: 25 lbs.
  • Power: 120V-60 Hz/240V-50Hz (electrically configurable, please inquire if purchasing product for use outside the USA)

NOTE: Specifications depend upon line voltages and tube types.