Ampapa H1 Class A Headphone Amplifier 4000mW with TRS/RCA Preamp Review

The Ampapa H1 is a Class A headphone amplifier and preamp priced at $179.99, currently sold as a pre-sale listing. It is built around a discrete Class A output stage for strong current drive, delivering up to 4000mW from its balanced high-gain output, and it is matched to headphones from 16 to 600 ohm so both sensitive models and harder-to-drive pairs have headroom.

Headphone connections cover the common HiFi formats: 4.4mm balanced, 4-pin XLR and 6.35mm. Power scales with the gain setting - balanced output is rated 4W high, 2W mid and 1W low, while the single-ended output is 1000mW, 500mW and 250mW - and low, mid and high gain make it easier to match either sensitive IEMs or stubborn planars.

As a preamp, the H1 offers 2x RCA and 1x TRS inputs plus 2x RCA and 1x TRS outputs, so a DAC, CD player and streamer can stay connected and the outputs can feed multiple power amps or active speakers; HP, Line and HP+Line modes choose between headphone output, preamp output or both. The tube stage uses exclusive PSVANE x Douk Audio ECC83 tubes and supports tube rolling, while a Japan NJW1195 volume IC keeps channel balance stable, pluggable op-amps invite tuning, and 0.04% THD+N and 113dB-plus SNR support clean signal performance. A 1.5-inch OLED, 12V trigger, low-noise relays, isolated tube power shielding and a CNC aluminum chassis complete the package.

Douk Audio ships worldwide with free and expedited options; costs vary by country. Parcels under 2kg ship airmail (10-25 days), heavier orders by DHL, UPS or FedEx (5-8 days), and any import duties or customs fees are the customer's responsibility. The store offers a 30-day free return or full refund and a 1-year warranty on all items, excluding orders placed by mistake, man-made damage or misuse, subjective change of mind, and anything outside the warranty terms.