Hier noch eine Information vom Entwickler Thorsten Lösch bezüglich Problematik:
1) Mismatched System Gain - Symptoms:
1.1) Turn on/off pops appear very loud
1.2) There is an obvious channel imbalance at low listening levels
1.3) There is excessive noise (Hiss) reported
Root cause - too much gain - this applies to both headphones and line outs
For headphones use iEMatch or if necessary normal power mode + iEMatch
to get enough maximum volume
For line level outputs (active speakers, normal HiFi) reduce the gain
(usually means lower the gain/volume control) after the iDSD micro
2) Problematic interactions with Bitperfect Filter and
Headphones/other electronics, Symptoms:
2.1) Faint background hiss is audible with Bitperfect filtering. It
often requires the customer to turn up the volume to "silly loud"
levels if music was playing and putting the player into pause.
Root cause - attached Headphone/Amp etc. has comparable high
distortion at ultrasonic frequencies. This causes normally inaudible
ultrasonic noise components that form a integral part of the workings
of Bitperfect mode to become audible.
Try to not use the bitperfect filter with incompatible Headphones and/or