MATRIXSYNTH: Modded Eventide H3000S

Monday, May 24, 2021

Modded Eventide H3000S

via this auction

Pics of the inside below.

"Non humming Eventide H3000S upgraded to all D/SE presets/banks. OS v2.17.
If you`re looking onto this device you know magic of this thing.

However, this device is unusual. Unit is professionally modded.
If you`ve used this device previously you know that crazy annoying hum which produces H3000.
So, this particular device is totally silent, no hum at all. And yes, this puzzled many times many H3000 users, with this also legendary problem of harmonizer.
Hum disappearing is result of modding, with two separate transformers instead of stock single mains transformer, which was unlucky just from start of H3000, causing vibration of top/bottom steel covers.
Other positive aspect of modding except relieving from hum is affecting onto sound performance, so, due to separation (by separate transformers) of digital and analog powering chains sound signature got more else luxury tails, transparency and airing.
In fact, separation of digital and analogue power chains is typical technical solution in many high grade top audio devices, top AD/DA, etc.
At last, input stage upgraded with sweet hi-quality Fairchild NE5532 opamps instead stock TL072 opamp (will be supplied also).

Overall, device in perfect optical shape, LCD, encoder and all buttons working perfectly."


  1. One would have to wonder, with what Eventide charges, why they did not use two power circuits and better op-amps in the first place.

  2. I've been showing up as "Unknown" because my Blogger profile was reset to zilch for reasons unknown. Isn't it ironic?



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