Love Amplifier

Written by  Tuesday, 26 November 2013 19:00

The Love amplifier is a quest for a tone that is pure.

I designed the circuit to be bare and small, running a Twin Triode hot into a Pentode without any circuitry to adjust the volume or tone as those circuits degrade the signal.

The Gain & Tone may be altered by your choice of Pre-Amplifier tubes, Output Power tubes and Rectifier tubes.

The Love Pre-Amplifier section accepts all tubes in the 12AX7 family, (some are : 12AX7, 12AU7, 12AY7, 12AT7, 5751, 7025) each of these tubes have different gain characteristics that will amplify your tone differently.

The Output Power tube section accepts most popular eight pin tubes (ie. 6V6, 6L6, 6550, 5881, 7581, EL34, KT66 and KT88). All of these tube changes may be made without internal electronic adjustments, due to the auto bias feature.

The Rectifier tube is associated with touch response to the tone, known as "SAG". The "SAG" perception is due to the different efficiencies of rectifier tubes, with some of them operating fast and others slow. Experimentation with different rectifier tubes like GZ34, CV378, 5V4, 5Y3, 5U4 and many others, all produce varying feelings of speed.

With this many drive options, the tones are unlimited.

Click to view Circuit card detail!


The entire circuit has been constructed in a Point to Point manner using Military Spec. 2000 guidelines.

Lead bending allows expansion and contraction of the component body to ensure longevity.

The entire Love Amplifier has been assembled with Silver .999 fine wire.

A rubber suspension system is utilized to isolate the electronic circuit components and tubes from speaker vibrations to extend your Love's life.

Stainless steel hardware is used throughout the entire Love amplifier.

The cabinet and the stand are crafted from a beautiful exotic wood called African Padauk which has a gorgeous natural orange glow.

Behind the Love symbol is our grill cloth, which is Tea Stained 100% Hemp fabric.

The iron stand features a swivel that enables you to easily rotate the amp to plug in, and then turn it around to play.

The chassis is crafted from Copper which is a great material for shielding electronic circuitry.

As with all Mill Hill Audio products, the Love Amplifier will provide you with a high quality piece of electronic art, that will live for many generations in your family.

Thank you for your time,

Jonathan Edward Glynn

Mill Hill Audio

Founder / Designer



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CONTACT: Jonathan Glynn | 805.415.9878 | California, USA |