Hey guys, that 2204 was built using our ST1 style board. It’s got added depth control over a standard 2204 and the gain switch is changing the cathode setup of the 2nd gain stage. Ie it’s still a 3 stage plus cathode follower design, and no diodes. It’s punchy as.
The partnership with Shea is completely awesome, and mutually beneficial. For the Alta’s going forward we are building the majority of the amp here, shipping to Shea’s workshop to complete, and then onwards to end customer. We are building them continuously, rather than doing them in runs or batches.