Custom Hand-Built RH84 Single-Ended Class A Tube Amplifier – 4W per channel Audiophile PerformanceBrand new build using high quality parts, PTFE wire, JJ can capacitor, Nichicon audio grade capacitors, Vishay & Ohmite resistors, ClarityCap audio film capacitors, Belton tube sockets,  Belden 8450 Shielded Input cable, Hammond choke, Built on a custom chassis.
Legendary Tamradio Tamura premium quality Japanese nickel output transformers . These vintage transformers are highly sought after by audiophiles and DIY tube amplifier builders because they are celebrated for exceptional sound quality and craftsmanship. They provide a deep rich bass extension and spectacular nuance and detail. These units were used in a top of the line Sony TC-500A reel to reel tape recorder.

Description:
Up for sale is a meticulously hand-built RH84 Single-Ended Class A stereo tube amplifier, based on the legendary high-fidelity circuit designed by Alex Kitic. If you are looking for an immersive, organic, and ultra-transparent listening experience, this is the perfect entry point into high-end tube audio.This amplifier delivers roughly 4 watts per channel of pure Class A power. While modest on paper, it provides astonishing dynamics, holographic imaging, and a rich, warm midrange when paired with high-efficiency speakers (90dB sensitivity or higher, such as Klipsch, Omega, or full-range single-driver designs).Features & Technical Highlights

  • The RH84 Advantage: Features the famous plate-to-plate "Schade" local negative feedback loop, ensuring excellent linearity, low distortion, and tight, controlled bass.
  • Auto-Biasing Design: Utilizing the updated Revision 2 circuit with an LM317 constant current sink, this amplifier requires absolutely no manual bias adjustments or expensive matched tube sets. Simply plug in your tubes and play.
  • Premium Component Selection: Hand-wired with high-quality components, including robust audio-grade transformers, precision resistors, and heavy-duty connectors for optimal signal transfer.
  • Tube Complement:
    • 1 x ECC81 (12AT7) double-triode (Driver stage)
    • 2 x EL84 (6BQ5 / 6P14P) power pentodes (Output stage)
    • 1 x 6CA4 (EZ81) Rectifier 

Condition & Cosmetic Appeal

  • Aesthetics: Custom 3/4 inch thick poplar wood base with a classic light grey stain. Custom cut aluminum top plate and wood bottom cover fitted and secured to base.  
  • Performance: Fully tested, dead quiet at idle (no annoying hum or buzz through the speakers) with a  large 10H Choke, and ready to plug-and-play.

What’s Included:

  • Custom RH84 Tube Amplifier
  • 2 Brand New Tung-Sol EL84's, 1 Brand New JJ 6CA4 rectifier, 1 NOS Testing Tung-Sol 12AT7   

Comes with a complete Mouser parts list, overbuilt specs like resistors and capacitors to quality brand-name components, Belton tube socket, PTFE wire
Shipped double-boxed and insured for the full purchase price; I am also offering this on US Audio Mart for a reduced price.  

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Listed9 days ago
ConditionExcellent (Used)
Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more
Brand
  • RH84 (EL84) Tube Amplifier (NEW BUILD)
Model
  • 002RH84
Categories
Year
  • 2026

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Audio Distractions

Allison Park, PA, United States
Joined Reverb:2025

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