GML 8304

4-channel Mic Preamp with Transformerless Circuitry, Incredible Dynamic Range and Pristine Sound
GML 8304 image 1
GML 8304 image 1
Special Order
Special-ordered from GML and usually arrives to you within 1-2 weeks. Please note: special orders cannot be canceled or returned.
Note: While most of the items we sell ship for free, this item does not qualify for free shipping due to special circumstances.

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GML 8304
Special Order

Four Channels Of Massenburg Mic Pre Perfection

From the legendary George Massenburg Labs comes the GML8304 Four-Channel Microphone Preamplifier, a multi-channel version of the famed 8300 Mic Pre, considered a world standard for studio and demanding live performance use.

GML8304 Four-Channel Microphone Preamplifier at a Glance:
  • A no-compromise preamp in one 1U rackmount case
  • all-discrete transistor circuits are completely transformerless
  • Incredible dynamic range

A 4-channel version of a classic
The GML8304 Four-Channel Microphone Preamplifier expands upon the time-tested 8300 Mic Pre, world renowned for its life-like realism, high resolving power, and reference-standard transparency. Whether you use it for recording or in a live performance situation that demands ultimate performance, the 8304 will deliver pristine sound with flexible control. Affordably priced, the 8304 is hand built and calibrated in limited production quantities using selected components.And all in a 1U rackmount case!

Transformerless circuits
The 8304's all-discrete, bipolar transistor circuit topologies are completely transformerless with no FETs, ICs, or electrolytic capacitors in the signal path. Even the outputs are direct-coupled; proven active servos remove DC without adding any artificial color.

15dB to 70dB input gain for any sound source
From 15dB up to a whopping 70dB of amplification, the 8304's input gain is selectable in precise 5dB steps. It accommodates all sources from low output ribbon mics through semi-pro keyboards to inserts in super hot mastering chains with one knob. A +24dBv CLIP indicator warns of any impending overloads and switchable phantom powering is built in.

GML8304 Four-Channel Microphone Preamplifier Features:
  • Completely transformerless circuitry
  • Balanced XLR inputs (4) and outputs (4)
  • Switchable phantom power per channel
  • Front panel overload indicator lights at +24dBv
  • External power supply included
The GML8304 Microphone Preamplifier: preamp perfection!

What Does "Special Order" Mean?

A special-order product is one that we don't normally keep in stock. We order it from the manufacturer as soon as you order from us. We have great relationships with all the manufacturers we carry, so we can get your special order to you as fast as or faster than anyone else. Remember that special orders are non-returnable and non-cancelable, so make sure the item is right for you. A Sweetwater Sales Engineer can help you decide — call (800) 222-4700 for assistance!

Additional Media

Studio Preamp Buying Guide

Tech Specs

Preamp Type Solid State
Number of Channels 4
Phantom Power Yes
Digital Inputs No Digital Inputs
Digital Outputs No Digital Outputs
Computer Connectivity No Computer Connectivity
Height 1.75"
Width 19"
Manufacturer Part Number 8304

Customer Reviews

Based on 1 review
Write your review

Great Unit

This unit is really great. Transparent, clean, tons of headroom. I only have one problem with this pre and it bugs me alot. Why are the Phantom Power switches on the back? It really can get annoying sometimes. Otherwise, great.
Music background: Engineer
See also: GML, GML Preamps