On its solid aluminum housing, this all-in-one solution features audio-in and audio-out functions through the RCA ports. These let you use the Aune T1 SE MK3 as a dedicated DAC with active speakers (like the Audioengine A5+) or a dedicated amplifier with a different DAC (like the Matrix M-Stage DAC). Because this DAC/amp uses the ubiquitous EH6922 tube, you can easily customize your sound through tube rolling. Want more kick in your bass? Nab a NOS Amperex 6922 from the ‘60s. How about more attack on the high end? Grab a gold-pin Tesla 6922. Plus, since the Aune T1 SE MK3 uses only one tube, you won’t have to mess around with matched pairs.