Golden Age Project Pre-73 Mk4 British-Style Microphone Preamp

Hear what a sweet, warm, vintage British-style preamp can do for your mics and instruments with Golden Age Project's affordable take on the classic '73 pre.

The PRE-73 MK4 is Golden Age Audio's update to their best-selling '73-style preamp series. The spirit of classic British consoles lives on in the Pre-73 MK4, and it sounds warm, punchy, sweet, and musical. Use it to add tone and color to your favorite mics, or keep things clean; it also doubles as a line-level preamp and DI box for electric guitar and bass. Get classic console tone -- and get the most out of your mic locker.

Get vintage color and punch by cranking up the Gain knob without fear -- a dedicated output control lets you attenuate the signal so you can drive the preamp without overloading your interface inputs. Engage the -14dB pad for even more control of hot signals, or keep things clean and transparent by backing off on the Gain and turning up the Output. Further sculpt your tone via the selectable low-pass filter to eliminate unwanted low-end rumble at the source, and use the selectable top-end Air EQ to add some shimmer and presence to your top-end. Use the Low-Z switch to toggle between 1200 or 300 resistance and hear how your mics react!

The PRE-73 MK4's switchable +48v mic input lets you use both condenser and dynamic microphones, while its 80 dB of Gain make it ideal for use with sensitive ribbon microphones, on delicate sound sources. Line-and instrument level inputs allow further connection to nearly any audio source, and you get an insert jack for using external processors like EQ's and compressors. You have your choice of TRS or XLR out.

True to classic read more preamps of yesterday, the PRE-73 MK4 was designed with a focused attention to component choices and build quality not found in other preamps near the same price. No surface-mount components or integrated circuits are used, and all inputs and outputs are transformer balanced, using two different purpose-optimized transformers. Its external power supply eliminates the risk of self-noise and its metal half-rack chassis is both sturdy and portable.


- Vintage Style electronics. No integrated circuits in the signal path
- Tantalum capacitors in the signal path
- Maximum gain in MIC mode is 80 dB, enough to handle passive ribbon mics with quiet sound sources
- GAIN switch range 20 -80 dB. GAIN/LINE mode switch, gain is reduced by 30 dB in LINE mode
- Selectable two position high frequency AIR boost eq, 3 or 6 dB @ 30 kHz
- Selectable 6 dB/octave two frequency high pass filter at around 40 (HP1) and 170 Hz (HP2)
- Switchable impedance in MIC mode, 1200 or 300 Ohms, will change the tone of most mics. The input impedance in LINE mode is 10k ohm
- Switchable phantom power and absolute phase
- A high-impedance instrument input for any sound module, electric guitar or bass
- A simple but effective 4-step LED output level meter
- The output level control makes it possible to make fine gain adjustments and also to overload the main gain stage(s) for more character and then lower the signal to a suitable level before the output stage
- Combo XLR/TRS input jack and separate output XLR and TRS jacks for flexible connections
- Insert jack for inserting EQs and other units
- The pcb is prepared for the Carnhill input transformer
- External power supply to avoid interaction with the audio circuits and transformers
- A solid build quality that will last many years of normal use
WARNING: Cancer and Reproductive Harm -
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- Preamp Type: Solid State
- Number of Channels: 1
- Analog Inputs: 1 XLR/TRS Combo, 1 x 1/4"
- Analog Outputs: 1 x XLR, 1 x 1/4"
- Height: 1.75"
- Width: 9.5"
- Amplification: 80 dB
- Phantom Power: Yes
- Phantom Power: 48 V Phantom Power switchable
- Phase Switching: yes
- D/A Converter: no
- A/D Converter: no
- Displays: LED
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 6.78 lbs
Shipping Dimensions: 14 x 13 x 4 in
Manufacturer Part Number (MPN): pre73mk4

For support or warranty questions, please contact the manufacturer:


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