EMM Labs DS-EQ1 V2 Optical Equalizer

The EMM Labs DS-EQ1 V2 is a reference optical equalizer designed exclusively for DS Audio optical cartridges. Developed by Ed Meitner in collaboration with DS Audio, the DS-EQ1 applies EMM Labs' expertise in ultra-low-noise analog circuitry, power supply design and precision signal handling to high-end vinyl playback.

Unlike a conventional moving-magnet or moving-coil phono stage, the DS-EQ1 provides the specialized equalization and electrical interface required by DS Audio's optical cartridge technology. Its proprietary circuitry is designed entirely in-house by EMM Labs, with optimized short signal paths and discrete Class A amplification.

Reference Optical Cartridge Playback

The DS-EQ1 V2 uses a custom aerospace-grade ceramic circuit board for its equalization and amplification stages, engineered to preserve low-level musical information while minimizing noise and distortion.

A front-panel control allows selection between a standard 50Hz RIAA response or an additional second-order 15Hz high-pass filter. EMM Labs' proprietary high-isolation resonant-mode power supply further isolates the sensitive analog circuitry from electrical noise.

Key Features

• Designed specifically for all DS Audio optical cartridges

• Proprietary discrete equalization circuitry

• Custom discrete Class A amplification

• Ultra-low-distortion design

• Custom aerospace-grade ceramic circuit board

• Optimized short audio signal paths

• Selectable standard 50Hz RIAA response

• Selectable second-order 15Hz high-pass filter

• Proprietary high-isolation resonant-mode power supply

• RCA input

• Balanced XLR and single-ended RCA outputs

• Precision-machined aluminum chassis

• Kimber Kable PK14 Base power cable included

• Designed and manufactured in Canada

Specifications

Input: RCA
Analog Outputs: Balanced XLR and single-ended RCA
XLR Output Impedance: 300Ω
RCA Output Impedance: 150Ω
XLR Output Level: 1V (+2.2dBu)
RCA Output Level: 0.5V (-3.8dBu)
Power: Universal 85–260V, 50/60Hz
Maximum Consumption: 50W
Dimensions: 438 × 381 × 102 mm
Weight: 12 kg
Finishes: Fine bead-blasted Silver or Black

EMM Labs DS-EQ1 V2 at The Grid HiFi

At The Grid HiFi in Houston, Texas, the EMM Labs DS-EQ1 V2 can be matched with the appropriate DS Audio optical cartridge, turntable and tonearm to create an exceptional reference analog front end.