Put V72 Preamp Gain
Into Your Arsenal
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THE SOUND OF THE ORIGINAL V72 MODULES
Inspired by the V72 modules originally built for the German Radio Network, the WT-72 offers 56 dB of gain, which can be driven by a microphone or line level source. The vintage modules only offered 34 dB of gain, so an additional 22 dB of gain is made in the WT-72 with small adjustments to the circuit while maintaining the most sought after tone and character we have all come to love.
Custom input and output transformers, as well as output plate choke help provide
the performance and character of its vintage inspiration!
TRUE TO THE ORIGINAL ALL TUBE DESIGN
Just as the vintage design required, the WT-72 employs both AC & DC voltage feedback, providing the proper gain and necessary stability.
QUIET GAIN SWITCHING
The all new WT-72 sets gain with attenuation and altering AC & DC voltage feedback. DC feedback switching would normally introduce large pops, causing harm to your monitors, or even worse, your hearing. The user would need to manually lower monitor volume before switching gain, making for a frustrating experience. A special muting system in the WT-72 performs a brief mute of the output between each step of gain. This mute eliminates the loud transient and allows the tubes to stabilize before the output becomes unmuted.
HYBRID SWITCHING SYSTEM
An 11-position rotary switch utilizes both mechanical and photo relays to change the amount of gain,
offering great flexibility.
HOW IT'S DONE
Gain knob settings Off - 36 dB are switched by attenuating signal to the first EF86, while the remaining 20 dB of gain (36 - 56 dB) are switched by changing AC & DC feedback.
WHY IS ANY OF THIS IMPORTANT?
By changing gain with voltage feedback (gain knob at 36-56 dB), there is less noise at less gain!
For example, at 36 dB of gain, you will have 20 dB less noise than at 56 dB of gain. We are limited with the amount of voltage feedback to change gain because there is a "sweet spot" for stability and frequency response. Therefore, using attenuation before the tube gain stages (gain knob at Off - 36 dB), allows the WT-72 to have the most gain flexibility and best noise performance possible.
Transformer balanced input and output give the WT-72 the character of the original
Audio passes through two EF86 tubes giving 56 dB of gain. The signal path contains no solid-state components.
A plate choke feeding the output EF86 provides large output swings at low distortion.
When "Line" is selected from the XLR IN switch, a 36 dB pad is placed before the input TX.
August 9, 2021
WT-72 Rev. B. - Best in the price range
I have abs have had all of the top pres. This one is just gorgeous. It had the depth of tube with a nice sheen on the top end. Drives nicely for guitars but is my go to vocal pre now replacing Neve, RND, and others.
August 7, 2020
WT-72 Rev. A. - I Use the WT-72 Almost Every Day
I love this thing on acoustic guitar. Adjectives? Cohesive and musical. And I love that it sounds very different than my other pres. I also use it on kick drum all the time. (Am I supposed to do that? I don't care--it sounds great!) Do looks matter? Maybe they shouldn't but the WT-72 looks impressive in the rack. And the DI feature is the icing on the cake. If you're looking to step outside of the usual Neve/API pre sounds without spending a fortune the WT-72 is a great option.
August 2, 2020
WT-72 Rev. B. - Big Boy Unit
I was excited to find an affordable V72 style mic preamp. I always wanted one but was concerned about age and price. The WT-72 sounds amazing, so thick, warm, and present. Eric knows what he's doing and pays attention to detail and build quality. It's simple, yet has the features you need. This unit real shines on whatever you put into it. It's a big boy product that should probably cost more, but let's keep that quiet!
July 31, 2020
WT-72 Rev. B. - Finally....
It had been years since I worked in a studio with legendary V72's, and they had always been on the back of my mind - but price and reliability were the things that always seemed to hold me back from buying a pair. When I heard rumor that Eric / Locomotive / Weight Tank was releasing a version, it was a no brainer for me. I immediately purchased when they became available, an I have not regretted it for a second. I would call their vibe a luxurious sonic tapestry of goodness. Combine that with an above average high quality build, superlative sound, excellent customer service, and the RIGHT features - I wanted a LINE input - and you have a winner on your hands. I have 2, and someday I'll probably have 4. They get used on vocals, acoustic guitars, percussion, drums, subgroups and individual tracks when mixing, and two buss as well - pretty much everything. Love em. Thanks WTank!!