Onkyo M-504 Amplifiers

Onkyo M-504 These are very solid clean amps. New versions today in 2017 are over 2000.00. A used clean 504 is selling for about 500.00. I bought mine for about 700.00 new in 1996. I see a three star review??? Noticed some guy who gave it 3 stars picked...

I Bought apprx 20 years ago used the M-504 and the M-304 preamp and the Onkyo 6 disc cd player hooked up with my Cerwin Vega DX-9s and DX-5 Speakers the Onkyo system really cranks out the sound to all 4 Cerwin Vega's.All i can say is that they are all...

Well, a lot has been said about these amps over the years, and rightfully so. Here is an opinion from someone who has(and in some cases still does :)) own(ed) virtually every high powered amp made. Onkyo's Integra, and Grand Integra Metered amps(M504,...

Well here we go. The years are around 1987 to 1989 (need to find the receipt) and I was doing a DJ gig part time when the amp I was using said see ya and died on me. I don't remember exactly how I came to Onkyo but I found in Japanese it means "High...

i have the onkyo m-504 and the m-506rs and ive owned a ton of amps before but i have to say,i use a dynaco pas 3 preamp,i totally rebuilt,new boards,tubes ,power supply,uses 4 12ax7 tubes,2 in the phono board,2 in the other board.this set up with 4...

I purchased the Onkyo M504 approximately 20 years ago at a store called CRAZY EDDIE'S. I paid full retail $840.oo , which was a small fortune at the time for a college student.. I also got the preamp p-304 and the quartz tuner t-9090..total cost...

I can not say enough good things about this amp. Only thing that I wish is that it was an M-508....wihich is on its way....WOOOO HOOOO!!!!

I got this M504 off Ebay for $250.00 and I can tell you that it's the best sounding Amp I have ever heard! Pick one up if you come have a chance to buy one!