I would recommend Echo Audio despite being an audio professional. I have a background in audio engineering, as in the science of it, not the "subjective science" of it.
I brought some English speakers, an American amp and a Swiss turntable here, and they have served me well. I also sold a vintage McIntosh tube amp, beautiful, but a room heater, to them for a fair price in a very professional transaction.
Perception of sound, especially music, has a heavy subjective factor. This fact has enabled an industry of hyperbolic claims that XYZ audio gear: iPod accessories, headphones, DAC's, headphones, turntables, vinyl phono needles, preamps, interconnects, speakers, amplifiers, vacuum tube equipment, even CD players, have superior, even transcendent, sound.
For example, there is even one equipment maker that places new age crystals in their gear, claiming enhanced sound.
Echo Audio is a fair place to buy used audio gear. Their advice is fair, especially when you clearly describe your background and objectives. They have their own in-house tech who is often there for a chat.
But they will indulge your interests in the more mystical realm if you request, mythical - in my professional view.
Taking all that into account, in Portland, Echo Audio is the only place in Portland to buy used, thoroughly checked and in great shape audio components at a fraction of the original price.
They are also a great place to go if you have a grandparent with audio equipment estate items needing new homes.
Echo is the only place in Portland in the area to buy vacuum tube gear - power hungry electronics made with hot glowing glass bottles, invented in 1909, the electronics before what we have today. In my opinion, backed by science, FET's are equivalent to tubes, but tubes look extremely cool and obscure - they will definitely impress your friends (and heat your room)!
They have electrostatic speakers from time to time, large but extremely thin, like two inches, definitely conversation pieces and with a great clean sound.
Turntables? They have some fancy turntables for playing vinyl that look sharp, including the Music Hall line, running between the low 100's to the low 1000's. They can talk cartridge sound too, and cartridges vary widely in tone.
It's not the world for buyers of all-in-one audio systems, or purely headphone listeners of 128K MP3's. They definitely have 'plug your iPod into' systems, and you will love that sound with better sound files. But you will find you want the size of your audio files to grow after making the acquaintance with Echo.
Echo Audio is a community of critical listeners and musicians who want components for a listening environment in the living room, especially approximating the recording studio environment. It is the only place in Portland to purchase audio gear that an audio insider with a critical ear would appreciate. Much of it sounds good too, take a close listen, bringing your own familiar recordings to test! read more