Tube, Class A and balanced headphone amplifiers, including DAC and gaming combos, compared by output power, outputs and impedance range.
Ampapa H1 Class A Headphone Amp 4000mW — read reviewA pre-sale discrete Class A headphone amp and preamp built around custom PSVANE x Douk Audio ECC83 tubes, delivering up to 4000mW balanced for 16-600 ohm headphones.
Douk Audio E2 Tube Headphone Amplifier — read reviewA tube headphone amp built around a German Valvo ECF801 running at up to 175V, with 2W of output from twin TPA6120 chips. XLR, 4.4mm and 6.35mm jacks cover 16-600 ohm headphones, and it doubles as a dual-input stereo preamp.
Douk Audio Z1 Gaming Headphone Amplifier — read reviewA gaming headphone amp and DAC with an ESS9039Q2M chip, 430mW balanced output, XLR and 3.5mm mic inputs with 48V phantom power, and USB audio mixing with voice return.
Douk Audio Q2PRO Gaming DAC Headphone Amp — read reviewA gaming-focused USB DAC and headphone amp with ESS9039Q2M conversion, PCM 32-bit/192kHz, a mic input with separate volume, ±12dB bass control and a 450mW headphone output.
Douk Audio U5 4.4mm Balanced Headphone Amp — read reviewA mini fully balanced headphone amplifier that runs its circuit at 24V from a 5V input, delivering 1400mW into 32 ohms for headphones from 18 to 600 ohms, with XLR and 4.4mm outputs.
Nobsound P10 PRO Portable Tube Headphone Amp — read reviewA battery-powered portable tube headphone amp using Raytheon JAN6418 direct-heating tubes, with 8-10 hours per charge over USB-C and swappable tubes and op-amps behind a visible top window.
Douk Audio P5 Vacuum Tube Headphone Amp — read reviewA dual-mono tube headphone amp and preamp with 4.4mm balanced and 6.35mm outputs, a 200V tube stage and a gain switch covering 16-600 ohm headphones. Choose an aluminum or solid walnut chassis; tubes and op-amps both roll without soldering.
Douk Audio U10 Tube Headphone Amplifier — read reviewA mini tube headphone amp that doubles as a preamp: 3.5mm and RCA inputs feed dual 3.5/6.35mm outputs rated at 1100mW to drive 18-600 ohm headphones, with pluggable 6A2 tubes and op-amps for rolling.
Douk Audio U3 Class A Headphone Amplifier — read reviewA $36.99 mini headphone amp whose output transistor runs in pure Class A from a boosted 26V rail, delivering 1300mW or more into 32 ohm with a pluggable NE5532 op-amp for DIY rolling.
Douk Audio U3 PRO Class A Headphone Amp — read reviewA palm-size Class A headphone amp that boosts a DC 5V supply to ±14V internally and outputs up to 1500mW into 32 ohms. RCA and 3.5mm inputs feed 3.5mm and 6.35mm jacks for headphones from 18-600 ohms.
Douk Audio U5PRO 4.4mm Balanced Headphone Amp — read reviewA fully balanced desktop headphone amp that runs its output stage at ±14V from a plain DC 5V supply, delivering up to 1500mW into 32 ohms. XLR inputs feed XLR or 4.4mm balanced outputs for 18-600 ohm headphones.
Nobsound P10 Headphone Amplifier and Preamp — read reviewA mini desktop headphone amp delivering up to 1100mW into 32 ohms for headphones from 24 to 600 ohms, with RCA and 3.5mm inputs, 6.35mm and 3.5mm outputs, and pluggable NE5532 op-amps.
Nobsound P32 Vacuum Tube Headphone Amplifier — read reviewA mini vacuum-tube headphone amp that doubles as a desktop preamp, outputting up to 1000mW for 24-600 ohm headphones with swappable 6J5 tubes and NE5532 op-amps.