Java Hi-Fi Single Shot MK1 pre-R2R: GaN speed, LDR precision, and the case for the Burr-Brown revision
The pre-R2R Single Shot is a 200-watt GaN class-D integrated built around transparency and timing rather than warmth. Its DAC has since been replaced by an in-house R2R stage, making this the version that now lives on the used market — and argues its case on sound character, not spec sheet freshness.
Java Hi-Fi Single Shot MK1 pre-R2R — simplified analysis
What defines it
The Single Shot is a 200-watt class-D integrated amplifier built around two ideas Java has made its signature: LDR (light-dependent resistor) volume control and GaN FET output transistors. The pre-R2R version — the one reviewers evaluated in 2023 and 2024 — adds a dual Burr-Brown PCM1794A DAC, MM phono stage, Bluetooth aptX, and a headphone output. Since March 2025, Java has been shipping updated versions with an in-house R2R DAC stage, which means the Burr-Brown revision now lives primarily on the used market and in remaining dealer stock.
The enclosure is immediately distinctive: natural wood veneer, an 8 mm anodised front panel, lateral heatsinks, and customisable finish options. This is not decorative compromise — the product genuinely argues both visually and sonically.
For whom
The Single Shot suits a listener who wants a genuinely complete stereo system in one box — MM phono, USB DAC, headphone output, Bluetooth — but who does not want an AV receiver or a streaming hub. It makes the most sense when paired with loudspeakers that respond to a fast, precise signal rather than those needing a warm, euphonic cushion. Owners report successful use with Zu Audio, B&W 802 D3, Harbeth 40.2, DeVore O/96, and Sonus faber Amati G5, suggesting reasonable versatility provided the pairing has some inherent warmth of its own.
It suits someone comfortable with an analytical, honest character in exchange for exceptional speed and resolution. It is a less obvious choice for listeners who rely on their amplifier to smooth out harsh recordings or add midrange density.
Strengths and reservations
Hi-Fi+, Twittering Machines, Tone Publications, and Witchdoctor all describe the same core character: fast transients, strong bass control, vivid timing, and transparency that reveals rather than conceals. What Twittering Machines calls "speed of light transients and explosive dynamics" is not a lone voice — it is the consistent review finding. The phono stage is praised independently by Witchdoctor and HiFi Chicken as genuinely capable, not a token add-on.