If it did not find a place elsewhere, it goes here
About using the amps for PA, guitar amps, live instruments, cars......
Alternatives for SP-60? (Too...
Ready built 41Hz Audio kits for sale and requests for building amps.
For sale: Amp9b Assembled X2
Sound quality impressions. Sound and power mods.
Amp 6 sneaky vs hifimediy t1...
Stuff about 41Hz that does not fit elsewhere
Will Amp-32 come back in...
Discuss possible future boards / implementations / ideas.