Desktop Single‑Ended Push‑Pull Tube Headphone Amplifier

Celebrating Goldenwave’s 10th anniversary, the GA‑10 delivers a refined, analog-focused tube performance tuned for both open- and closed-back headphones.

3W @ 300 Ω Power

This SEPP (single-ended push-pull) amplifier produces 3W into 300Ω and 600 mW into 32 Ω—balanced smoothly across its 4-pin XLR, 4.4 mm, and 6.35 mm outputs. 

Premium Tube Complement & Shielded Power

Featuring four ECC83/12AX7 dual‑triodes and four EL84 pentodes per channel, the GA‑10 uses carefully-selected tubes (currently PSVANE) to deliver transparent, warm tonality. A heavily-shielded 120 W transformer minimizes interference while supporting clean power delivery. 

Excellent Clarity, Low Distortion

Sonically, the amplifier is praised for its spacious, balanced presentation and clean, delicate sonics—earning high marks for both sound and design. Its THD+N is around 0.001% @ 1 kHz/300 Ω. 

Robust Build and Desktop Presence

A hefty unit at 12 kg and 330×110×380 mm, the GA‑10 sports a minimalist aluminum and steel chassis with functional ventilation and classic tube glow. It's built like a tank, with solid front-panel controls. 

Flexible Input/Output & Impedance Matching

Includes balanced XLR and RCA line-in options, plus output impedance switching (Low for <60 Ω, High for 60–300 Ω). Three headphone outs cover balanced XLR, 4.4 mm, and 6.35 mm formats. 

Product highlights

• 3W per channel (300 Ω); 600 mW (32 Ω), single-ended push-pull SEPP architecture
• Tube complement: ECC83/12AX7 ×4 and EL84 ×4
• Shielded 120 W toroidal transformer; disciplined voltage/regulator design
• THD+N ≈ 0.001% @ 1 kHz/300 Ω; frequency bandwidth 20 Hz–24 kHz ±0.5 dB
• Inputs: balanced XLR, RCA; Outputs: XLR 4‑pin, 4.4 mm, 6.35 mm
• Weight ~12 kg; footprint ~330×110×380 mm
• Ideal for high-end, high-impedance headphones (e.g. Susvara, HE1000) 

Specs

• Output Power: 3000 mW @ 300 Ω; 600 mW @ 32 Ω (@1 kHz)
• THD+N: 0.001% @ 1 kHz / 300 Ω
• Freq Response: 20 Hz–24 kHz ±0.5 dB (@1 kHz)
• Power Consumption: 70 W total
• Dimensions: 330 × 110 × 380 mm (~13″ × 4.3″ × 16″)
• Weight: ~16 lbs (≈12 kg) 

What’s included

• GA‑10 amplifier with tubes installed
• IEC power cable
• User manual and warranty paperwork