M-Audio ProFire 610
The M-Audio ProFire 610 seems to be one of the most popular audio interfaces for home studio owners. We at AudioNeeds.com have decided to look further into the 610 to find out why.
The M-Audio ProFire 610 is a 6-in / 10-out audio interface with 2 Octane preamps with low noise and plenty of headroom. It supports up to 24-bit / 192kHz of high quality digital audio, and is compatible with most of the popular audio software available. (Pro Tools, Cubase, Sonar, Logic, Live, Garageband) Read more 
Demeter Amplifications HBP-1 Tube Bass Preamplifier
The HBP-1 by James Demeter is a tube preamplifier which uses the same tube front end from the VTBP-201 and combines it with the same circuitry found in the his professional audio H-Series line. This preamp accepts both active and passive inputs and comes with volume, bass, middle, treble, and presence controls. It has a 2 band parametric EQ, an effects loop send and return, as well as a mute switch. All of this adds to the great versatility of the sounds you can achieve with this unit.