BB2000

Thanks for the post Sean. I'm going to have to check these out. I don't suppose I'll find anywhere in Scotland with a decent selection - any suggestions for a shop or two in England that's worth a visit?

QA deteriated from the early 70's until early 80's (70/71/72 Fenders are generally OK). In addition very heavy (cheap) ash was often used for ash bodies at this time, instead of the expensive swamp ash used earlier (14lb jazz basses are not unknown). Fender brought in Bob Schultz in the early eighties. He brought in former collegues from Yamaha who essentially retrained the Fender production staff. Quality improved drastically at this point - Fenders from the early 80's are generally pretty nice. Current instruments are as well made as they have ever been.

I think the technical term for stuff like this is "sh*te".

[quote name='thebuckets' post='712084' date='Jan 13 2010, 11:25 PM']just bought a 1983 (I think) yamaha BB 400s fretless and am after a truss rod key to fit, its a nut on the end of the truss rod (body end) so looks like it would be some sort of socket fitting anyone know where i can pick one up? Cheers Bri[/quote] 5/16" (Gibson). Stewmac.

[quote name='martinbass7750' post='708607' date='Jan 11 2010, 10:24 AM']I doubt it's the switching power supply, although it could be. The class D amp and the poswer supply are both switching types. It might be a beat between the two frequencies that you can hear. Or it could be that the filtering on the class D low pass filter is not quite right. When you switch off, as the voltage drops the switching frequency of the ampm and psu will shift, so the audible effect will change. Switching power supplies generally operate way above normal audible frequency, as do class D amps, so the most likely culprit is a beat between the two. For example, if the PSU is running at 42KHz, and the class D amp is running at 40 KHz, there will potentially be a beat of 2 KHz.[/quote] That assumes they operate at a fixed switching frequency, most modern class-D amps are self oscillating (although I've no idea if the flightcase is).