The RA-1 is a simple op amp based amp that uses very inexpensive components. It's a CMOY amp, and if you look at eBay and on the net, you will see it's quite inexpensive. That said, it can be a very good amp. So if you want basically the same amp,look for a CMOY amp either on the net or eBay. The beauty of a non-Grado CMOY is that its easy to swap op amps- instead of the 35 cent op amp Grado uses you can splurge and go for a $3 op amp. With the Grado, it's very hard to swap the op amp.
Grado Reference RA-1 Battery Alternative
I have a pair of Beyerdynamic DT 880 Semi-open 250 normal impedance. They sound a little flat and I was told that a Grado Reference RA-1 is the "best of the best" headphone amp and the difference would be night and day. Unfortunately, there are special circumstances involving Grado's ability to deliver and know-one has one in stock and know-one knows when they will. I need a headphone amp that is battery driven. What is the best alternative in the same quality and price class. Any insight will be greatly appreciated.
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