Vox 730 refurbishment

A while back I had the pleasure of refurbishing a Vox 730. This very rare amplifier was almost the sole amp used on the Beatles’ Sgt. Peppers and Revolver albums. Here’s a look...

They call it the Babyface mod

A very early Avalon 737 came in for a routine service this week. Its owner, a local chap is an old school buddy of Wyn Morro, the man behind Avalon Design He reminded me that it was this very Avalon 737 that was the first to have a fast attack modification performed...

Building the Head Band

Here at Pro Harmonic our Broadcast products are built by hand in an Australian Shed. We have been busy refining the Head Band Pure Performance Headphone amplifier following the prototype’s successful Groovin’ the Moo tour. Here’s a video of the new...
Head Band – pure performance stage Headphone Amp

Head Band – pure performance stage Headphone Amp

As is the way with all Broadcast products, they arise from repeated requests for a custom device with similar requirements. I’ve built hundreds of headphone amps and was receiving a number of requests for stage headphone amps. A loud, high performance amp is a...

Racking 101

Racking channel strips or modules taken from mixing consoles is one of Pro Harmonic’s main activities. Here is a slideshow of how we do...

Unique opto cell distorton

Here’s a video Audio Technology magazine snapped of Rob back at Integrate in 2011 talking about the unique distortion signature of the Urei...