I had the same problem... the output on the D+P is awful.... I ended up putting my sirius directly into the jazzy input, and using the free fm modulator cable that came with my D+P, I put the D+P direclty into the antenna line using Subaru Metra connector to Motorola adaptors... I hate using it that way, but it's the only way to get full sound out of it, and I like having the ipod hidden and whatnot... I'm not the biggest fan of the D+P currently... but I have it modded in so nicely I don't want to pull it out.... plus now I get an extra input.. which I'll either hook my nav into, an open accessory port, or a Motorola bluetooth link, so I can connect bluetooth devices like phones, ipods etc... (despite already haveing a BT car kit)..... damn you HK!!