Hey guys, I picked up a cool looking Silvertone "HiFi" Speaker Amplifier from a local guy for a crisp 20 sheet. Originally intended for record players I believe. Here's some specs: -It works! -6V6 x2 power tubes, 6AV6 driver, 12 AX7 inverter?, 5Y3 rectifier -8", 8 ohm speaker -RCA input (solder together an RCA to 1/4" cable to run my guitar) -No fuse, 2 prong plug The tube compliment looks close to some Fender stuff but I know the circuit could be completely different. I'm looking to get into amp modding (and light repair), not ready for building yet that's for sure. I know filter caps can be extremely dangerous and roughly how to work with them. I've modded a few pedals and can work a DMM and a soldering iron. My father also has some electrical knowledge (went to "radio college", worked on very early PC's, etc.) and is a resource. Any tips for starting out? Here's what I'd like to do: 1) Add a fuse a 3 prong plug 2) Check that the filter caps and tubes are good 3) Swap the RCA for 1/4" input 4) Add an internal speaker defeating external cab jack Here's some pics.