Herron Audio Reference Line Stage


The Herron Reference line stage has a proprietary one of a kind tube bias servo circuit that optimizes the performance of many different tube configurations that are equivalent to the 6DJ8 type dual triode vacuum tubes.

The Herron Reference is the result of many years of research and fine tuning for pure listening enjoyment.

“My reference line stage for over twenty years. When Keith Herron has a made a significant improvement, I have upgraded. I know of no line stage at this price that delivers the musical characteristics I find most important to my listening enjoyment.”

Tom Rothermel – Big Ear Stereo, February 2020

Customer Feedback November 2018
Herron VTPH-2A Phono Stage with VTSP-360 Vacuum Tube Preamplifier

By Bob Craig (Chicago Audio Society): “Keith, I listened to the two units over the past two Saturdays. I used the phono stage (VTPH-2A upgrade) first on its own last Saturday, and then added on the 360 last night, after running another pre-amp for a bit. With the phono stage I noticed more three-dimensionality and more upper mids and high end. With the 360, the result was holy (expletive deleted)!! I couldn’t believe it. You have really outdone yourself with the 360. When I find a component that makes me want to hear more, that is special to me. Most pieces of equipment don’t do that. But the 360 did it. Even an old mono Angel from the 50’s sounded great (solo piano) and a DGG from the 70’s sounded like an audiophile recording. I thought I had pretty good sound before, but this is just beyond. If you don’t sell lots of the 360, there is something wrong with the audio world. It sounds the best I have heard here at home. I appreciate your efforts and hope more people discover what you have to offer.”

Out of stock

The Herron Audio Reference line stage uses four type 6922, or 6DJ8, or E88CC, or 7308 dual triode vacuum tubes.

Design Considerations

  • Multifunction remote control
  • Volume level display (0 – 100)
  • Switchable absolute polarity
  • Two gain modes (High and Low)
  • Stereo/mono switch
  • Full-range balance control
  • Home theater bypass function
  • Mute control
  • Display brightness control
  • Low noise design
  • Two main outputs
  • One tape output
  • Tape out/in loop
  • Six inputs including tape
  • 100K input impedance
  • 1/2 inch thick brushed aluminum anodized face plate
  • High input-signal capacity without overload
  • Automatic muting at startup and shutdown
  • Gold plated, Teflon-insulated RCA connectors
  • Hand-picked components for accurate response
  • Reversing power line (AC) polarity switch
  • Each unit is hand crafted, burned-in, and given rigorous bench and listening tests

Remote Control Functions

  • Input Selection
  • Absolute Polarity
  • Display Brightness
  • Volume, Mute, and Mono/Stereo


All face plates are 1/2 inch thick brushed anodized aluminum and are available in titanium, silver or black.


 Frequency Response 1 Hz to beyond 100 kHz, 20 Hz to 20 kHz ±0.1 dB
Output Impedance 100 ohms nominal at 1 kHz
Input Impedance 100,000 Ohms
Gain 14 dB in Hdb mode, 4 dB in Ldb mode
Volume Control 100-position electronic stepped attenuator, maximum differential 0.1 dB channel to channel
Distortion <0.01% THD + Noise @ 1 volt r.m.s. output
Absolute Polarity Switchable
Dimensions 17.6″ wide x 4″ high (including rubber feet) x 10.25″ deep
Warranty 3 years, parts and labor; tubes: 90 days