Universal Audio LA-610 MKII – Mackie Big Knob – XLR to 1/4 Cable (2)


Key Features
  • Tube Preamp
  • Variable Impedance Switching
  • 2-Band Switchable EQ
  • T4 Based Compressor

Universal Audio LA610 MKII Overview

The LA-610 Mk II from Universal Audio brings vintage, “all tube” sound to the modern channel strip format. The unit combines a 610 Mic-Pre/EQ/DI section, based on the console modules developed by Bill Putnam in the 1960s, with a T4 Opto-compressor, and houses them in a 2U rack-mount enclosure. The 610-tube preamp, DI and EQ deliver a sound that is as timeless as it is legendary, and a hallmark of many classic recordings. The simple operation and program dependent nature of the T4 compressor provides extremely musical control.

The LA-610 MkII is sonically very versatile and can function as an ideal front-end for tracking into a digital audio workstation. The preamp is augmented with two bands of shelving EQ, followed a T4 based optical compressor. Although not an exact LA-2A clone, the compressor circuitry nevertheless shares its signature sound by utilizing its unique combination of an electro-luminescent panel and photo-resistors. Three 12AX7A tubes, a single 6072A and 6AQ5 tube combine to provide “warmth” and overall even tonal balance.

The Mk II delivers several enhancements over the original LA-610. A true compressor bypass switch is now available which completely avoids the compressor circuitry. Other changes improve the performance of the output signal, improved consistency with input gain values and feedback-style shelving EQ improves the EQ stability. An auto-sensing, universal power supply is included, along with larger and better lit metering.

Single-channel vintage channel-strip
Design based on legendary Bill Putnam’s 610 tube microphone preamp and EQ console modules, used on countless classic recordings
Microphone preamp features Gain and Level controls, variable impedance switching, and Instrument DI for recording tone “color”
Improved stability with feedback-style shelving EQ
Authentic Teletronix LA-2A-style T4 opto-compressor with continuous peak reduction and makeup gain
Compressor circuitry can be fully bypass with the inclusion of a true bypass switch
15dB pad switch and polarity reverse switch
Improved metering with meter source selector switch
LED jewel “power on” indicator light never needs replacement
Auto sensing universal power supply
UA build quality and heritage, audiophile components and hand-assembled in the USA

Universal Audio LA610 MKII Number of Channels Single Inputs 1 x XLR Microphone 1 x XLR Line Outputs 1 x XLR Frequency Response 20Hz to 20kHz, +/-0.5dB Noise -72dBu (20Hz to 20kHz, line in/unity gain) Preamp Gain Range +77dB (microphone) 40dB Line Maximum Output +23dBu (120VAC line) Input Impedance 500Ω or 2kΩ, selectable Phantom Power +48V Compressor Threshold Range Program dependent Ratio ~3:1, soft knee, program dependent Attack Time ~10mSec, program dependent Release Time Dual stage: ~60mSec for 50% release, followed by 1 to 15Sec, program dependent Slope Not specified by manufacturer Sidechain No Equalizer Filter Type Low and high shelf Frequency Bands HF: 4.5, 7 and 10kHz LF: 70, 100 and 200Hz Bandwidth Not applicable Range (Boost/Cut) 1.5, 3, 4.5, 6, 9dB, switchable boost/cut Light Indication Threshold Range Program dependent Ratio ~Infinity:1, soft knee, program dependent Attack Time ~10mSec, program dependent De-Esser Threshold Range Not applicable Frequency Range Not applicable Gate Gate Threshold Not applicable Gate Rate Not applicable Physical Power Requirements 100/120/240V 30W power consumption Dimensions (WxDxH) 19 x 12.25 x 3.5" (483 x 311 x 89mm) Weight 12 lbs (5.4kg) Specialties Custom Altran and Cinemag transformers Auto sensing universal power supply Packaging Info Package Weight 15 lb Box Dimensions (LxWxH) 22.2 x 17.4 x 7.3"

In the Box

– Universal Audio LA-610 MKII – Recording Channel – Mackie Big Knob Series Monitor Controller – XLR to 1/4 Cable (2)


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