I upgraded my garage amp to a Sony DAES3000 receiver. I scored one locally, used for 150+ tax. Right now its feeding a pair of Martin-Logan Motion2s. I needed something which could also support a second set of speakers (for the patio), and multiple inputs. So its hooked up and powering my old Sony Blu-Ray player which is on CD duty. I also want to play stuff from my phone. So I use a Y through the headphone jack to RCAs. Now the volume level is atrocious. If I max the volume the ES3000 only gives me + 10DB, and I could use more power. I can get some limited boost from the built in EQ, but not much. So that was from the phone, using RCA/analog in on either the MD/DAT or the TAPE connections. Then I hooked up the CD player, with an optical cable. Holy smokes! There is the volume. The sound is fantastic. I was spinning Ziggy Stardust and the percussion in 5 years sounded amazing (along with the rest of the album). Is there something different way I should connect the phone?
Is your Y cable stereo on both ends? If the small jack that goes into the phone is mono you might be causing a bad connection inside the phone and might be the reason for the low volume.
I am assuming its stereo. I was wondering about getting a better Y, I will take a look at what monoprice has.