Can you show me a rear picture of this unit?

Hi Jamie,On back it has an XLR output, 1/4" output, Insert Jack, and a combo xlr/1/4" input jack as well as the power input jack. We don't really have a way to link a picture on here. If this was helpful, please consider buying from us. - Pixel Pro Audio

I bought this unit last month and after a week or so...I started hearing a hum. Can you please help me with this issue?

I'm sorry to hear that you're having this problem. Unfortunately, I can't offer any help though. I've had mine for over a year now and haven't experienced any problems. I'm afraid I'm not tech savvy enough to offer any trouble-shooting advice. It'd probably be a good idea to contact the seller.

What's the difference between the mk ii and the mk iii?

The MK III has a 2 high shelve options for adding air to the signal, a dedicated switch for mic / line that allows the unit to apply 80db of gain. The MK II only allowed 50db on line signals.

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Golden Age Project Pre-73 MKIII Mic Preamp

Product ID: 351970070

Details

Brand
GA PROJECT
Colour
Red
Compatible devices
all
Item weight
3.08 kg
Material
Metal

⚡Transformer-balanced input/output

🎙️Discrete component signal path

🎚️Selectable AIR boost & filters

Description

🎛️ Unlock Legendary Sound with Vintage Vibes and Modern Mastery

VERSATILE INPUT MODES - Handle everything from passive ribbon mics to high-impedance instruments with phantom power and impedance switching.
TAILORED TONAL CONTROL - Switchable AIR boost and high-pass filters let you sculpt your sound with surgical precision.
PRO GRADE VISUAL FEEDBACK - Intuitive 4-step LED metering keeps your levels perfect, so you never miss a beat.
TRANSFORMER BALANCED CLARITY - Dual optimized transformers ensure pristine, noise-free signal integrity for every mic and instrument.
VINTAGE WARMTH MODERN PRECISION - Experience the iconic 1073-style punch and sweetness with pure discrete electronics—no ICs to dilute your tone.

The Golden Age Project Pre-73 MKIII is a single-channel, vintage-style mic preamp built with discrete components and transformer-balanced I/O, delivering the classic warm, punchy sound of the legendary 1073 module. Featuring selectable AIR boost EQ, high-pass filters, phantom power, and impedance switching, it offers versatile tonal shaping for professional-grade recordings across all genres—all housed in a rugged metal chassis weighing just over 3 kg.

Specifications

ASIN	B00YHM700U
ASIN	B00YHM700U
Amplifier Type	Solid State
Audio Output Mode	Stereo
Brand	GA PROJECT
Color	Red
Compatible Devices	all
Connector Type	XLR
Customer Reviews	4.4 4.4 out of 5 stars (47)
Customer reviews	4.4 4.4 out of 5 stars (47)
Date First Available	4 October 2015
Department	Musical Instruments
Enclosure Material	Metal
Is Discontinued By Manufacturer	No
Item Weight	3.08 kg
Item model number	PRE73MK3
Manufacturer	Golden Age Project
Manufacturer	Golden Age Project
Mfr Part Number	PRE73MK3
Model Name	Pre-73 MKIII
Model Number	PRE73MK3
Number of Bands	1
Number of Items	5
Output Channel Quantity	1
Power Source	Corded Electric
Product Dimensions	35.56 x 33.02 x 10.16 cm; 3.08 kg
Sound Profile	Warm, Punchy, Sweet, Musical
Unit Count	1 Count

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