I will admit knowing little about the TV-front tweed Deluxe amps, other than a very brief noodling on a used one at GC. I recall liking the sound. I have a friend / collector / seller that has offered me a mostly mint 5A3. I am unsure how it would work in just a home-noodler setting. I play a Telecaster, and prefer few to no pedals. Just want glorious sound. Are those octal preamp tubes difficult to find and what sort of price can I expect? Please also mention any other info I need to know before jumping in.