Фонокорректоры — Backert Labs Optik Phono 1.1

The Optik Phono 1.1 is a tube equaliser from Backert Labs, built specifically for DS Audio optical cartridges rather than functioning as a conventional MM/MC phono stage. Designed and hand-built in Pennsylvania by long-respected amplifier designer Bob Backert and his son Gary, this model represents the first phono equaliser for DS Audio cartridges to offer two independent tonearm inputs, a genuine first within this specific niche category.

Key specs that matter

Two automatically biased 12AU7 tubes handle the tube-circuit amplification stage, drawing on technology developed for Backert Labs' reference line-stage preamplifiers, operating under gentle conditions intended to support consistent performance and extended tube life. Two independent RCA inputs allow two DS Audio cartridges or tonearms to remain connected simultaneously, switchable instantly via a front-panel switch - whether that's a stereo and mono combination, or two different stereo cartridges - without swapping cables or buying multiple equalisers. Selectable gain accommodates different DS Audio cartridge models. Both balanced and unbalanced outputs are provided. Three separate GreenForce power supplies, Backert's patented design using PTFE capacitors described as smaller, higher-quality and more nimble than traditional power supply capacitors, feed the circuit for clean performance. Because DS Audio's optical cartridge system requires light-source power and specialised equalisation entirely different from a conventional magnetic cartridge, this unit cannot be used with moving-magnet or moving-coil designs. Construction uses an American-machined aluminium chassis with a solid, deliberately unfinished brass bottom panel supporting the circuit board for natural sound quality, IsoAcoustics Gaia isolation feet, and solid-silver wiring in key signal-path areas - the exterior features no visible screws, fasteners or ventilation holes anywhere. A heavy anodised aluminium front plate is available in silver or black at no cost, with the black chassis optionally powder-coated in red, blue or another colour for an additional fee. The unit is built to order with a typical 10-14 business day lead time.

Sound and use context

Expect the low noise, high resolution, precise tracking and clean, immediate presentation DS Audio's optical cartridge ecosystem is specifically prized for - Backert Labs' approach of rethinking the entire equaliser circuit from scratch, rather than adapting a conventional phono stage, is intended to fully exploit the speed and exceptionally low moving mass that makes DS Audio cartridges distinctive.

Pairing

The dual tonearm inputs suit a serious analogue system running multiple arms simultaneously, letting a listener switch between two DS Audio cartridges instantly rather than juggling cables between listening sessions.

Alternatives

Backert Labs' broader Rhumba preamplifier line, including the Rhumba 1.3 Extreme, sits within the same core engineering philosophy for buyers wanting a matching line stage, worth pairing together for a coherently voiced system reflecting Bob Backert's characteristic ground-up design approach.