Okay, I'm investigating fans right now, and have two of the lowest noise ratings I could find here.

They are both noticeable, but one of them (ball-bearing fan) is reasonable with a 130-Ohm resistor in series with it -- about the same noise level as the (single) hard drive inside the unit when docked.

The current prototype specifications are as follows. Keep in mind that the design is basic to keep it affordable. If you want a built-in power-switch, amplifier, aux-in, rear-out, veneered exterior, volume controls for the amp, and serial/USB connectors, then you'll have to customize it or build your own (or enclose this one in a larger cabinet).

-- sled-less cabinet constructed of 0.5" MDF, with an internal docking connector for all electrical/signal connections, except ethernet.

-- overall measurments approximately 8"x8"x3", plus four rubber feet on bottom.

-- all edges/corners rounded over for a sleek look, paint it (yourself) your favourite colour(s).

-- Front of Empeg can either be inset flush with front of cabinet (harder to remove..), or fit flush with surface of the cabinet. Undecided yet..

-- uses YOUR existing AC-adaptor for power, connected via a jack at the rear of the cabinet.

-- ethernet jack mounted at rear of the cabinet, connected internally to the Empeg (automatic docking).

-- twin RCA phono plugs mounted at rear of the cabinet.

-- top mounted fan, flush with top of the cabinet, directly over the "fan port" on the Empeg. Fan speed preset with 130-Ohm resistor, but user could modify this with a 200-Ohm potentiometer for variable speed if desired.

-- two 1.5" round air intakes, one on each side of the cabinet, which line up with the airflow holes on the Empeg.

Cheers