48-month financing on our best brands
October Savings | New Ways To Save For Fall 2021
$ 3,700 .00
No interest if paid in full within 12 months Learn more
Ships directly from GML
Note: This item may not be returnable or could require a restocking fee. Contact one of our Audio Consultants for more details. This item ships directly to you from the manufacturer. To ensure that the manufacturer currently has stock, please chat, call or email for the latest availability status.

SKU

57613

GML 8304 Series II Four-Channel Microphone Preamp

Four channel microphone preamplifier, includes 8355 external power supply

Product Description

GML Microphone Preamps are world-renowned for their life-like accuracy and wonderful transparency. Now the Series II models are available as 2 channel or 4 channel (8302 or 8304) versions. GML's continuing research and review of up-to-date componentry maintains the brand's legendary transparency. The GML 8302 and the 8304 Series II have been reconfigured with front-panel-mounted phantom power and phase reverse switches, and the +48v phantom supply has been completely redesigned resulting in lower noise. Their 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 with time-proven active servos that remove DC without adding any artificial color. 10dB to 65dB of gain is front panel selectable on the front panel in precise 5dB steps. A +24dBv clip indicator warns of any impending overloads. Both GML 8302 and 8304 occupy 1U rack space. Both versions ship with an external power supply (GML Model 8355) and a 5pin XLR power cable.

Technical Specifications

  • INPUT - 1kΩ balanced XLR, 80 dB common mode rejection at 100Hz & 10kHz, +12.4 dBv maximum input before clipping (minimum gain setting)
  • THROUGHPUT - 50 volts/microsecond minimum, symmetrical at 30 dB gain, Distortion: Maximum SMPTE intermodulation at +20 dBv output level; 0.0015% at 30 dB gain /0.007% at 70 dB gain, Effective input noise: < -126.5 dBv with 150 ohm source / < -129.5 dBv with 0 ohm source (measurements at 400Hz & 30 KHz, 12 dB/octave high & low-pass filters (ref: 0.775v), Frequency response: +0, -0.2db @ 10 Hz & 50 KHz / +0, -0.3db @ 1.7 Hz & 260 KHz, Phase shift: 22 degrees @ 10 Hz & 260 KHz
  • FORM FACTOR - Number of channels: 4 maximum (2 or 4 on order), Clip indicator: +24 dBv ±0.5 dB, Gain:10 to 65dB in 5db (±.25dB) steps, Front Panel Indicators: 4 red clip LED’s, 1 green power LED, Phantom: 48 volt switchable, 40 ma. available. Currently supplied with standard 6.81 KΩ, 1% resistors.
  • OUTPUT - +27.4 dBv at clip, unbalanced XLR (pin 2 hot), 3 mv output offset max, stabilized by D.C. servo correction
  • OTHER - external power supply: +28 volts, separate ground and chassis connections at rear, Enclosure: 1.75"X 19" rack mounting, 10" deep. Satin grain, black anodized finish

Product Specifications

ConditionNew
Tube or Solid StateSolid State
Channels4-Channel
Chassis19-inch Rack-mount
Rack Spaces1u
Input ConnectorsAnalog XLR
Output ConnectorsAnalog XLR
MIDI ConnectionsN/A

Product Reviews

No one has written a review yet. Be the first!

* Required Fields

Share Your Opinion

The best gear advice always comes from those who use it the most. That's where you come in! Let the pro audio world hear your voice with a review of the GML 8304 Series II Four-Channel Microphone Preamp . Once you submit your review, please check your email and verify your address to have it posted.

How do you rate this product?
I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.
The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
James P.
Thank you so much! Vintage King has been so fair and easy to work with. I can't thank you enough. It feels good to trust such a hefty purchase to folks who are so helpful and knowledgeable. Vintage King is a sound designers dream store.
Noa L.
You guys have excellent customer service and I am excited about the next upgrade I complete on my fifth recording facility. I've been in the studio business for forty plus years. The salesman I worked with at Vintage King was the best of the best. You all rock!
Robby T.
I would recommend Vintage King to any one looking for top-class gear, unbeatable customer service and the best prices on the map!
Jake D.
My experience with Vintage King was excellent. The order was here fast considering it was out of stock. The sales person had SKB send it to me directly and I couldn't have been more pleased.
Michael D.
From the minute I placed my order I was kept well-informed through each step in your process. Even though I was buying a comparatively modest piece of gear, your attention to detail made me feel like I was purchasing a six-figure mixing desk.
Thomas W.
I am a new customer of yours. You guys provided me the absolute best deals in ordering all the equipment to power my brand new recording studio. Your customer service is amazing and i will always deal with you from here on out.
Rob M.
Thanks for your great service and getting this out today. You guys really are the Kings!
Alan B.
Better than expected! Truly impeccable service. Your team was professional, knowledgeable, provided speedy delivery above and beyond standard. Vintage King Audio is definitely my go to for all of my audio and information needs.
James O.