Audio devices
DAPs, DACs, headphone amps, integrateds and streamers — with output power, DAC chip and topology.
Hybrid Tube-Input / Solid-State-Output Headphone Amp
Hybrid headphone amplifier: a 12AU7 tube driver stage feeds a discrete MOSFET solid-state output stage. Captures the harmonic-richness of…
Entry-Tier USB-C Dongle DAC (Single CS43131)
Single-chip CS43131 USB-C dongle DAC — the entry-tier portable. 3.5 mm TRS single-ended output only, 130 mW into 32 Ω, USB Audio Class 2…
Dual-Mono Balanced Power Amplifier (MOSFET Class AB)
Dual-mono Class AB MOSFET power amplifier. Each channel is electrically and physically separate — independent transformers, independent r…
MM/MC Phono Preamplifier (Discrete JFET Input)
Discrete JFET-input phono preamplifier with switchable MM (moving-magnet) and MC (moving-coil) gain stages. JFET cascode input topology d…
Studio Monitor Controller with Headphone Amp Front-Panel
Active monitor controller designed for desktop near-field monitor systems. Balanced XLR inputs and outputs, two-set speaker switching wit…
Network Audio Streamer / Renderer (Roon-Ready)
Pure network audio renderer — no DAC, no amplification, just a galvanically-isolated streamer with USB Audio Class 2 output and AES/EBU d…
Desktop Integrated DAC + Headphone Amp (ES9039Pro)
All-in-one desktop DAC + headphone amp. ES9039Pro DAC followed by a Class AB balanced amplifier stage that delivers 1,800 mW into 32 Ω an…
OTL Tube Headphone Amplifier (6N6P / 6N1P)
Output-transformerless tube headphone amplifier optimized for 300 Ω+ dynamic headphones. Two 6N6P output tubes per channel in parallel si…
Pure Class A Desktop Headphone Amplifier (Discrete BJT)
Single-purpose desktop headphone amplifier. Pure Class A discrete bipolar-transistor topology with no integrated chip op-amps anywhere in…
USB-C Dongle DAC with Dual CS43131 and Balanced Out
Pocket-sized USB-C dongle DAC and headphone amplifier. Dual Cirrus Logic CS43131 chips (one per channel) drive both a 3.5 mm single-ended…