Thanks for sharing your BOM. I had already substituted a lot of the same parts
Why did you use a DPDT for your R3P bypass? In your BOM you show the same switch for this and your heater voltage switch. Wouldn't a SPST work fine here?
I'm thinking I will use R13-603C-05
Originally Posted by runeight
Yes, you can use 2.21. The .01 is less than the 1% tolerance of the resistor itself. But the reason that this resistor is xicon is because of what you discovered about the available Vishay RN55D values. MHO is that you won't notice any difference whatsoever between the two brands used in the position in the circuit.
I didn't think that amount would matter too much. For no good reason, I just wanna use all Vishay.
I am gonna leave R3P alone though since the only Vishay equivalent available form Mouser is this:CP00058R200JB14
I ordered my transformer and boards today. I'll be placing a Mouser order after they get back to me about a question on some test probes. Hopefully today, maybe tomorrow.
I'm still undecided on the case though. bmwpowere36m3 has me worried about fitting the larger transformer and the DAC inside the case. The BantamDAC is pretty small though. I am going to use a 3.5mm stereo plug instead of RCAs, so that's a little less stuff on the back. Plus, I'm putting the main power switch on the front, so that will help too. Only problem is I'm putting 2 small slider switches on the back panel for the heater voltage and to bypass R3P.
I think it will all fit. I'll just have to be creative
Now that I'm ordering parts, my excitement to hear this amp jumped up a couple notches.
Thanks for sharing your design Alex. Sorry for asking so many bonehead questions hehe