Bob Ludwig – Grammy Winning Mastering Engineer

Recent Projects: Queen, Eric Clapton, Bruce Springsteen, Coldplay, Wilco, Tony Bennett
“Symphony I/O is unquestionably the most transparent and best sounding converter ever…I use it every day.”

Miles Walker – Grammy Winning Engineer

Recent Projects: Rihanna, Katy Perry, Usher, Beyoncé

“With the Symphony I/O, I can meet all my current studio needs, but have room to add additional I/O from the same box. Aside from all the other benefits, being modular is really what appealed to me. I see my gear as an investment. I’m never getting rid of my Apogee stuff!”

Young Guru – Grammy Nominated Engineer

Recent Projects: Jay Z, T.I, LL Cool J, Method Man


“With Symphony I/O there’s a tightness in the sound that enhances everything. Kicks have more punch, snares have more hit, vocals stick out without you having to turn them up, everything just sounds more in place sonically and where it’s supposed to be.”



Butch Walker – Artist, Songwriter, Producer

Recent Projects: “The Spade”, Avril Lavigne, Pink, Train, Gavin DeGraw
“I was in a hotel room in NYC and needed to do a quick demo on my laptop for a pretty big pop artist that I work with.. Immediately after record enabling the track, I heard it picking up the entire room.. it was so sensitive and had such broad dynamic range… It kind of blew me away”

Akon – Grammy Nominated Artist, Songwriter, Producer

Recent Projects: Lady Gaga, T-Pain, Michael Jackson
“It has a nice open sound, but more than anything, it’s a clean transfer and it’s transparent”

Chris Lord-Alge – Grammy Winning Mixer

Recent Projects: U2, Michael Buble, Green Day, Foo Fighters, Stevie Nicks


Everything is so much clearer now! With Symphony I/O, I don’t hear anything but what comes off the console, exactly as it went in.