Bravo - 6v6 tube Headphone Amplifier

Hand Built in North Carolina, USA

• Pure Class-A Operation
• Dual Independent Power Supplies
• NOS 6SN7 and 6V6 tubes included

Designed and tuned for the discerning listener.
A Lifetime Amp

Features

Core Architecture

• Pure Class-A Operation
• Tube Complement: 6SN7 & 6V6
• Dual Independent Power Supplies
• Pure Single-Ended Triode-to-Pentode Signal Path
• No-Compromise Topology (Zero tone-killing compromises; entirely free of Cathode Follower or Parafeed circuits)
• True Auto-Bias Circuitry
• Optimized Load Profile: Ideal for headphones 32 Ω to 600 Ω

Connectivity

• RCA Input

3 Input Upgrade (+$200 — select the 3 Inputs + Pre-Out configuration above)

• 3 Selectable Inputs
• Preamplifier Output (Pre-Out)

Craftsmanship & Signal Path

• Premium Point-to-Point Wiring
• Fully Shielded Input Stage
• TKD 2CP-2511 100k Premium Volume Control

Power & Real-World Noise Specifications

• Heavy-Duty Power Transformers
• Premium CLCLC Filter Stage with Dual Heavy-Duty Filter Chokes
• Non-Magnetic Aluminum Chassis (Eliminates stray eddy currents & hum)
• Elevated DC Filament Supply
• Honest Residual Noise Floor: −80 dB (Loaded @ 32 Ω) / −72 dB (Unloaded)

Elevated DC filaments and a CLCLC-filtered B+ rail drop the noise floor. The result is full clean power across the entire impedance range.

The power supply is true dual mono, meaning that each separate power supply powers one 6V6 and one side of the 6SN7 for complete channel separation.

The B+ (high voltage) supply is rectified with ultra-fast diodes and the plates of the 6SN7 are supplied with regulated B+ from a Zener diode chain. Non-inductive Vishay resistors on the regulated B+ rail and on the 6V6 cathodes keep the signal path clean from supply to output stage.

Specifications

Preamplifier output (unloaded line out): 8.0 V RMS max clean · residual noise floor ≤ −78 dBm.

Loaded noise floor: ≤ −80 dBm into 32 Ω — acoustic silence on high-sensitivity headphones.

Reviews

★★★★★ "BRAVO — Extraordinary Class A 6SN7 / 6V6 Triode Mode Headphone Amplifier"

Pros

• Euphonic voicing
• Build quality
• Excellent component parts
• Gold-plated connections
• Choice of colors
• Class A — Triode mode
• Custom-wound transformers and chokes
• Pre-amp
• TKD potentiometer

Cons — Cost

— Alex, via Head-Fi · May 23, 2026