Jump to content

SOLD - Mofo Class A Monoblock Amplifiers and Nelson Pass Front End


Recommended Posts

Over the last 6 months I have experimented with the Mofo amplifier from Diyaudio because I own a pair of Monoblock F4 amps and wanted to see how the Mofo's performed for 1/4th the price. I built 3 different types of the same amp at the standard 19V and was very impressed by the sound, but I am now selling them to fund other diy projects. 


The Mofo and F4 are Power Follower amps and have 0 gain, which means they need a VERY powerful gain preamp or can be run by a flea watt integrated tube amplifier. I have a pair of Klipsch Super Heresy and used a Modwright Tube Preamp, a Pass Korg Nutube, a Pass Front End, and a Whammy headphone amp. All of them drove the Mofo to reasonable listening levels.


For sale with prices is everything below:


- Monoblock Mofos in a single diy chassis with two 19V Dell power supplies, WIMA film caps, with 6MM faceplate and a Peruvian Walnut bottom. You can expect 12-15 Watts Class A with a preamp that has enough juice to push them. With Klipsch, Zu, Tekton, Fostex, or any other efficient speakers over 95 db you shouldnt need them at full power. - Asking $300 plus ship


- Monoblock Mofos on separate Peruvian Walnut plates with the same 19V Dell power supplies, but Solen Capacitors. These are a more rugged and exposed version but sound very similar to the first amp. Expect the same power and requirements to run them. - Asking $250 plus ship


Both the Mofos do NOT have a switch to avoid thump on turn on. I recommend a switched Power bank or a surge protector switch to turn them on without thump. 


- The Nelson Pass Front end I built to power a pair of the amps with 20db of gain and is powered off a 48V Meanwell DC power supply.. It has two inputs, and a single output. I built it into a Hammond chassis and painted the front to match the silver amp. It is a very nice pairing with the Mofos - Asking $100 but willing to give a better deal with the first amp.


I am willing to ship anywhere in the continental US. Any questions just ask.

Link to comment
Share on other sites

  • Dneu2011 changed the title to SOLD - Mofo Class A Monoblock Amplifiers and Nelson Pass Front End

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...