Portable Tube Headphone Amplifier Class A Preamp color Orange

Bring your music to life with this portable Class-A tube headphone amplifier, delivering smooth analogue warmth and impressive clarity. Its lightweight design makes it perfect for desktop listening, home Hi-Fi systems, and late-night sessions with your favorite headphones.

Key Features

• Authentic Tube Sound powered by 5654W and 6Ж4 vacuum tubes, offering rich midrange, smooth highs, and natural musicality.

• Two-Stage Amplification for clean voltage boosting and powerful signal delivery with excellent transparency.

• Tone Controls Built In allowing you to fine-tune bass and treble for a personalized listening experience.

• Versatile Connectivity with 3.5mm and 6.35mm headphone jacks plus RCA input/output for easy home system pairing.

• Supports Multiple Headphone Types thanks to switchable low/high impedance modes designed for 16Ω–300Ω headphones.

• Compact Aluminum Housing provides durability, low noise, and stable high-quality audio performance with SNR ≥97dB.

• Tube Rolling Compatible so enthusiasts can experiment with different tubes for unique sound character.

Specifications

• Model: GR70

• Amplification Type: Tube Class-A

• Tubes: 6Ж4 ×2, 5654 ×2

• Frequency Response: 20Hz–20kHz (±1dB)

• Dynamic Range: 97dB

• Signal Input: RCA

• Outputs: 3.5mm, 6.35mm, RCA full-range

• Rated Output Power: 60mW

• Input Voltage/Current: 12V 3A

• Signal-to-Noise Ratio: ≥97dB

• Color: Orange

Package Contents

• Tube Headphone Amplifier (Orange)

• 6Ж4 Vacuum Tubes ×2

• 5654 Vacuum Tubes ×2

• Power Adapter (AU plug)

• User Guide

What Makes This a Smart Buy:
Combining portable design with the warmth of true tube audio, this amplifier offers a level of clarity and character that transforms everyday listening. It’s an affordable upgrade that unlocks fuller, richer sound from any headphone setup.