UNIVERSAL AUDIO / LA-610 MKII

This channel strip features a preamp designed based on a console module developed by Bill Putnam in the 1960s and used on records by famous artists, and an optical compressor that recreates the LA-2A. Its warm, smooth sound is still loved by many engineers and artists today.

■Channel Strip

The A-610 MkII channel strip combines an all-tube vintage microphone preamp, as heard on albums by Coldplay, Van Halen, the Beach Boys, and others, with a genuine Teletronix T4 optical compression circuit. This classic channel strip design delivers warm preamp tone and smooth, natural compression, while offering modern features like true compressor bypass, large metering, high output, and an auto-switching power supply.

The Legendary 610 Preamp
The LA-610 MkII is based on the legendary console module developed by Bill Putnam in the 1960s. Renowned for its character and warm sound, this preamp has been used on recordings by artists ranging from Frank Sinatra to Coldplay, Van Halen, and Pet Sounds. The LA-610 MkII imparts silky, vintage warmth to your sources, echoing the original console's microphone amplifier design.

A Tube Compressor with a Tone of Its Own
The LA-610 Mk II's T4 tube compressor delivers the same ultra-warm-sounding limiting as the king of opto-compressors, the Teletronix LA-2A. The electro-optical detector, or ""T4 cell,"" is the heart and soul of the Teletronix LA-2A. Its photoresistor is a key circuit, lending the compressor a unique warmth that makes it ideal for tracking vocals, bass, and acoustic guitar. In short, it's impossible to get a bad sound using the LA-610 MkII's legendary preamp and compressor.

Key Features
- All-tube mic preamp inherited from the Bill Putnam-designed 610 modular console
- Genuine Teletronix LA-2A-style opto-compressor section
- MkII-exclusive features: true compressor bypass, larger meter, increased output, and auto-switching power supply
- Mic preamp with gain, level, and variable impedance switch, plus an instrument DI for textured recording tones
- High/low shelving EQ
- Vintage channel strip at a breakthrough price, ideal for project studios
- Hand-assembled in the USA by skilled technicians to ensure exceptional UA quality

Specifications
◎610TUBE PREAMP
Equalizer Section: HIGH (±9dB, selectable from 4.5k/7k/10k), LOW (±9dB, selectable from 70/100/200Hz)
Selectable mic input impedance: 500Ω or 2kΩ
Line Input Impedance: 20kΩ
Selectable Hi-Z Impedance: 2.2MΩ or 47kΩ
Supports 48V Phantom Power
PHASE Switch: 0°C/180°C
-15dB Pad Switch: ON/OFF

T4 Optical Compressor
Compressor Ratio: 3:1, Soft Knee
Limiter Ratio: ∞:1, Soft Knee
Attack Time: 10ms
Release Time: 60ms
VU Meter Display: Selectable Preamp/Gr/Comp
Mode: Selectable Byp/Comp/Limit
Maximum Output: 40 dB (Line), +77dB (Mic)
Vacuum Tubes: (3) 12AX7, (1) 12AT7, (1) EL84

Input Connectors: 2 XLR (MIC IN, LINE IN), phone x 1 (Hi-Z)
Output terminal: XLR x 1 (LINE OUT)
Frequency response: 20 Hz to 20 kHz +/- 0.5dB
Power consumption: 30W
Dimensions: 48.3W x 8.9H x 31.1Dcm, 2U
Power supply: 100-240V 50/60Hz
Weight: 5.4kg