Here is a 100W Class D I put together around the $30 Sure Class D modules. Enclosure is a 2U 19" dampened rack mount. It has two switchable inputs; one with a Alps pot and 4oz solid brass knob for sources which do not have attenuators and one which connects direct to the power module. 10A rec. bridge and 30,000uf of filteringstorage provide 25V to the brd. Solid brass speaker binding posts, heavy gold plated RCAs, silver plated copper wire in the audio path, a power filter and ferite power cord choke round-out the compliment,

I have only had a short chance to listen to the amp quietly on test speakers so hard to comment on performance. But it will come.

Comments

• JRKO
• 5 November 2014 at 12:30PM
• Tidy little build there!
  
  Any comparisons with other class D units - maybe the Hifimediy amps?

• mwhouston
• 23 May 2015 at 09:25PM
• JRKO
  
  Without trying to outline all of the five Class Ds I have built to date there is nothing wrong with this initial 100W unit. It has a upper mid warmth which I have not seen in any of the others.
  
  But some of the others do have some very nice characteristics which this amp does not possess. For one, the 250W Digikey sold IRS class D (which I called "Class D" - see posting on this site) is extremely transparent. The T4 board from Eastern Audio Electronics may be the one to beat though.