Heritage Audio Motorcity EQualizer
- Reproduction of the “MOTORCITY EQualizer”
- Historically correct control layout with specially shaped Bakelite buttons
- 1 Line input: XLR
- 1 Line output: XLR
Heritage Audio MotorCity EQualizer Review
Heritage Audio, a professional audio company based in Madrid, Spain, has released a faithful replica of McLean’s EQ, which they’ve named the MotorCity EQualizer. For reference, Heritage used authentic versions of the original unit, generously lent to them by legendary producer and mix engineer Michael Brauer. Since many of the original parts were no longer available, Heritage Audio created custom components that match the tolerances of the originals, with less than 1% variation.
The MotorCity EQualizer is a fully analog, passive EQ design featuring seven selectable frequency points across the tonal spectrum. With its 10-gauge hand-brushed aluminum faceplate and historically accurate control layout—complete with custom-molded Bakelite knobs—the MotorCity EQualizer truly looks the part.
The Heritage Audio MOTORCITY EQ features a UTC replica input transformer with a modified turns ratio, designed for better compatibility with modern setups. For the output stage, Heritage chose a Carnhill-driven output line amp instead of the original’s Opamp-labs output, which was often a source of reliability issues.
Heritage describes the result as a “dead nut” replication of Michael Bauer’s units, with one intentional exception: they opted for a trusted Carnhill transformer in the output stage rather than copying the original op-amp. The reason? That original op-amp was known for being unreliable and was considered the Achilles’ heel of the classic design.
Most importantly, the unique passive equalization circuit remains equivalent and fully faithful to the original, featuring custom-built, military-spec 1960s tone capacitors and inductors. The Heritage Audio MOTORCITY Equalizer delivers the same unmistakably big, punchy, and warm signature sound, making this EQ every bit as classic as the legendary hits it helped shape.
The 2U, single-channel MotorCity EQualizer features selectable frequency bands at 50 Hz, 130 Hz, 320 Hz, 800 Hz, 2 kHz, 5 kHz, and 12.5 kHz. You can boost or cut each band by up to 8 dB, in precise 1 dB increments, using heavy-duty, detented rotary switches. These are controlled with large, custom-molded Bakelite knobs for a classic feel.
Other controls on the unit include a 3-way switch that powers the unit on or off and allows you to toggle the EQ between active and bypass modes, which is perfect for A/B comparisons. There’s also an output gain control and a vintage-style jewel-light power indicator on the front panel.
All rotary switches use easy-to-read, “General Radio”-style Bakelite knobs, faithfully recreated to match the originals. There is also a master gain control (-8 dB/+8 dB) with 1 dB steps. The simple, accurate 1960s-style back panel features a power jack for the external power supply, as well as XLR input and output connections.
The sound of the MOTORCITY EQualizer is exactly what you would expect—it delivers power without ever sounding harsh or distorted. As Michael Brauer puts it: It simply has that sound! The Heritage Audio MOTORCITY EQ isn’t a digital imitation, a close replica, or a so-called modern “improvement.” It’s the real thing, finally made available to the public.
With its silver faceplate and custom-molded Bakelite knobs, the MOTORCITY EQ is certainly a striking piece of gear, and its specs are genuinely impressive. If you have two rack spaces available and the budget for a single-channel EQ, this could be the perfect fit for your setup.
- 100% authentic recreation of Motown Records EQ
- 3x inductors & 3x tone capacitors per channel, totaling 21
- Heavy duty rotary switches used for all 7 EQ bands and gain control
- Exclusive UTC replica input transformer with modified turns ratio for
- Carnhill-driven output line amp substitutes original Opamp-labs output for better performance
- In/Out/Off lever allows A/B-ing of EQ
- Better integration in modern studio
- All analog EQ circuit
Why You Need the Heritage Audio MotorCity EQualizer
Every studio needs a unit that delivers that unmistakable sound coloring found on so many classic records and chart-topping hits. While the Heritage Audio MotorCity EQ might not be the original, with only a 1% variation, it takes you right back to that golden era and adds a unique flair to your tracks.
It might not be the most budget-friendly option, but this unit is truly worth it. With the power and character it brings, it’s a total no-brainer—if you have the funds, you should definitely give it a try and add it to your collection.
Conclusion
As always, Heritage Audio has delivered another outstanding product. You never have to think twice when you hear this brand name—it’s always associated with “quality” and “professionalism.”
Like their other units, this equalizer is another gem in their lineup. If you’re looking for an EQ, we highly recommend giving this one a try.
If you have any questions about this equalizer, feel free to ask in the comment section below or reach out to Heritage Audio through their customer service page.
