Responses from imhififan

Accuphase E-280 Voltage Conversion (100V to 120V)
I suppose the last picture above is the post-modification (working at 120v) ? @jcgoobee Yes, if your E-280 has the same connections and color coded wires. 120V connection: 100V connection:  
Luxman M-10x and Banana Plugs
Luxman 505uxii Class A/B operation
According to my observation, class A power of an class AB amplifier is approximately 10% of its idle power consumption. The 505uXII idle power consumption (no signal) is 85 watts. I estimate its Class A power to be about 4 to 5 watts per channel. ... 
XLR to RCA conversion
I am wondering if the PC-2XR will work. I think it should work and if you order from PE it comes with a 60 day no hassle return policy.  
yamaha cr 1020
Yes, all 12V 60mA. http://akdatabase.org/AKview/albums/userpics/10004/Yamaha%20CR-1020%20Schematic.pdf    
Female spade crimp connectors for AR 2ax speakers source?
Can this works? 1 in 3 Out DIY Mini Splice Compact Quick Electrical Connector https://www.ebay.com/itm/400407981081  
Harman kardon a300 rebuild
Well, everyone starts as a beginner. 😊 According to the schematic I would use 100μF for C23 and C24A, higher voltage rating wouldn’t hurt either. I don’t know why 650Ω and not 470Ω, you can try both for best performance. BTW, since you are rebui... 
Harman kardon a300 rebuild
Please refer to the schematic, There are total of three filter capacitors in its power supply: one 100µF 200V can, one 50µF 400V + 100µF 200V can and one 3X 40µF can. Are you talking about the 50µF 400V + 100µF 200V can? It is two capacitors ins... 
Are AYON Amps popular in the high end community?
Blowing Fuses. Dennis Had Inspire 300B SET
A Dim Bulb Tester can save you some fuses.  
McIntosh MC611 (terminal 2, 4, or 8 ohms)to B&W 800d3's
always always try the other taps and evaluate. +1  
Speaker binding posts with plastic covers
@imhififan  Thank you, thank you, for posting that diagram. That was exactly the thing confounding me most... You're welcome! I'm glad to know that everything worked out fine, my Coda CSiB uses the exact same type of binding posts and I total... 
Speaker binding posts with plastic covers
IF this goes on any longer, we will need a photo I think. Krell K300i  
Speaker binding posts with plastic covers
BTW, if the top won't unscrew, maybe it's completely unscrewed! Try going clockwise and see if the top turns.  
Speaker binding posts with plastic covers
I hope this helps🙂