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Universal Audio LA-610 MkII Channel Strip
The UA LA-610 MkII combines the legendary Bill Putnam-designed 610 tube mic preamp with an authentic Teletronix LA-2A-style optical compressor, delivering vintage warmth and smooth, musical compression in a single rackmount unit. Hand-built in the USA, this channel strip updates the classic design with modern features like true compressor bypass, larger metering, increased output, and an auto-switching power supply — all while maintaining the unmistakable tone that has shaped countless iconic recordings.

Features

• All-tube mic preamp derived from the legendary 610 modular console
• Authentic T4 opto-compressor circuit modeled after the LA-2A
• MkII improvements: true compressor bypass, brighter metering, higher output, auto-switching PSU
• Dual Gain/Level controls for flexible preamp coloration
• Variable impedance mic and Hi-Z inputs for tone shaping
• High and low frequency shelving EQ with feedback-style stability
• Front-panel instrument DI for direct recording with vintage color
• Classic channel strip sound in an affordable, project-studio-friendly unit
• Custom Cinemag and Altran transformers for authentic analog character
• Hand-assembled in the USA with premium audiophile components

Specifications

Preamp Section
- Inputs: Mic, Line, Hi-Z Instrument
- Mic Input Impedance: Selectable 2 kΩ or 500 Ω
- Hi-Z Input Impedance: 2.2 MΩ or 47 kΩ
- Gain Control: 5-position stepped input gain
- Output Level: Continuous preamp level control
- Pad: -15 dB switch
- Phase Reverse: 0° / 180°
- Phantom Power: +48 V

EQ Section
- High Shelving: ±9 dB at 4.5, 7, 10 kHz
- Low Shelving: ±9 dB at 70, 100, 200 Hz

Compressor Section
- Circuit: T4 optical compressor
- Controls: Peak Reduction & Makeup Gain
- Modes: Compress (3:1), Limit (∞:1), Bypass
- Metering: Switchable for Preamp, Gain Reduction, or Compressor

Construction & Power
- Format: 2U rackmount
- Power: Auto-sensing universal power supply
- Transformers: Cinemag & Altran
- Front Panel: LED jewel light (no replacement needed)