How about trying one of these cheap digital amps that have received a lot of positive reviews.
Tripath Chip: Teac A-L700P($99), Sonic Impact($29), Battery powered Clari-T($499)
Equibit Chips: Panasonic XR50,XR70($300-$400)
JVC Digital: RX-F10 ($229)
Tripath Chip: Teac A-L700P($99), Sonic Impact($29), Battery powered Clari-T($499)
Equibit Chips: Panasonic XR50,XR70($300-$400)
JVC Digital: RX-F10 ($229)