Voltbridge Labs
Voltbridge Solstice
Class-A headphone amplifier
$499
● In stock
Discrete Class-A power with a volume knob you'll fidget with for fun.
Pairing note Drives every headphone we stock — the answer to “will this be enough power?”
- 30-day home trial — full refund, no restocking fee
- Free tracked shipping on orders over $99
- 5 years warranty, handled by us directly
Full specifications
| Topology | Fully discrete Class-A |
|---|---|
| Output power | 4.2 W @ 32 Ω (balanced) / 1.6 W @ 300 Ω |
| THD+N | < 0.0005% (1 kHz, 1 W) |
| Gain | 3 steps: –9 / 0 / +12 dB |
| Inputs | RCA, 4.4 mm balanced |
| Outputs | 6.35 mm, 4.4 mm balanced |
| Volume control | Machined aluminium, 256-step relay ladder |
| Chassis | CNC aluminium, 220 × 168 × 55 mm |
| Warranty | 5 years |
Compare these numbers side-by-side on the comparison bench →
Why we stock it
Amps matter most at the extremes — very sensitive IEMs and very demanding planars — and the Solstice handles both. Fully discrete Class-A output, three gain steps, and a noise floor low enough for the twitchiest IEM. The machined volume control alone converts skeptics in the showroom.
Owner reviews
Rated 5 out of 5 ✓ Verified purchaseThe knob alone is worth $100
“Silly praise first: the relay volume ladder clicks like a bank vault. Serious praise second: dead silent with sensitive IEMs and effortless with the HP-90. One amp, whole collection.”