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Maag Audio PreQ4 - 500 series Preamp  From Maag

A clean and full bodied single channel mic preamp featuring Maag's famous AIR BAND®. Hear it in action in our HD video review!

Maag Audio


Retail:  $1,095.00

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What We Think

When we first decided to be a dealer for Maag, I was particularly interested in their preamp. They’re most well known for their EQ’s (the EQ2 and EQ4), which are both fantastic so I assumed this level of quality would be found in the preamp as well. We brought in a pair of the PreQ4’s to live in our studio, but before hearing them for myself, I had no clue what to expect. I’d read that it’s a very clean preamp, and it has a high frequency shelving EQ that can lift the top in nice ways, but sometimes “clean” can have just as many different definitions as “colored” does. 

Now that I’ve used these preamps in a variety of different settings, I’ve really grown fond of them. It’s a clean preamp, but with just a tiny bit more weight and excitement to it than a fully transformerless design like the Grace or Millennia. You still maintain a huge wealth of harmonic detail, but without losing the musicality of the instrument or voice. The High-frequency shelf (aka Air Band) is quite handy and can be beautifully subtle, but the real take home here is the sound of the preamp itself. Check out our videos about the preq4 to hear for yourself.


If you want a clean preamp, but fear the sterility that may come with absolute transparency, get a PreQ4 and don’t look back.

Maag PreQ4-500 Mic Preamp Demo

The Maag PreQ4-500 is a single channel 500 series mic pre featuring the legendary AIR BAND. The AIR BAND is a variable frequency shelf boost ranging from 2.5 to 40kHz with an incredibly gentle curve, resulting in increased signal "openness." The Maag PreQ4 is an excellent mic pre for nearly every recording application. It provides transparency and top end presence that is second to none while maintaining the clear, detailed and full bodied sound behind the mic. This fantastic preamp is available for SoundPure's exclusive Try Before You Buy program, so you can see how the Maag PreQ4 sounds in your studio with your gear. If you like what you hear, check out the gear used to make this video at SoundPure.com, or give us a call anytime at 919.682.5552. Thanks for watching!

Manufacturer's Description from Maag

Following its PreQ3 predecessor, the PREQ4 provides unparalleled transparency and top end presence while maintaining the true natural sound behind the microphone.

Presented in the flagship lunchbox® portable format, the PREQ4® offers the legendary AIR BAND®, 65dB adjustable gain, phase reverse capability, 70Hz high pass filter, +48V phantom power, and -20dB PAD. The Maag Audio PREQ4® is an official member of the VPR Alliance.

Maag Audio

About Manufacturer

Mäag Audio was founded by Cliff Maag, who has been a recording engineer for over 35 years with a strong passion for high quality sound. Cliff is an inventor of the acclaimed NTI EQ3 and the Nightpro PreQ3 & EQ3D. He was also the President of Research and Development during the early years of NTI and Nightpro. The AIR BAND® is still known to this day as an unsurpassed element of the original NTI and Nightpro gear. Now available in the new EQ4® and PREQ4® 500 Series gear from Maag Audio.


Max Gain

65 dB

Frequency Response -3 dB points, 10Hz & 75kHz
Nominal Input Impedance XLR) Mic, 150 Ohms, balanced
Nominal Output Impedance (XLR) 50 Ohms, actively balanced
Equivalent Input Noise -128 dBu (-96 dBu Actual Metered Noise)
Headroom +27 dBu
Maximum Phase Shift 25°
THD + Noise < 0.007%
*Specifications subject to change without notice. **Recommend turning the GAIN fully counter-clockwise before engaging.

Sound Clips





Preq4 User Guide