• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!

Apollon Purifi 1ET7040SA ST / Parasound P6 - Bad combination?


New Member
May 14, 2024
Connecting a Parasound P6 preamp to an Apollon Purifi 1ET7040SA ST with Sonic Imagery 994 op-amps.
A problem surfaced...
While switching between different sources, an annoying ‘tick’ can always be heard. With the volume at zero, that ‘tick’ is also there.
I first connected the preamp balanced and then single-ended. With both there was the problem with those ‘ticks’
At first I thought the problem was with the P6 and I went back to the shop where I bought the P6. Got another P6 but the problem with that ‘tick’ was also there.
Again back to the shop and connected both P6 preamps to a Class AB power-amp, here that ‘tick’ was not there.
The shop gave me another class D power amplifier, a Gato DPA-4004, to try. No ‘tick’ with this power amplifier either.
Anyone have an idea what causes those ticks?
I am a bit worried that it will end badly for my speakers.

In the attached zip file a video, nothing connected to the preamp, just the Apollon poweramp...


  • IMG_6536 (4).zip
    4.2 MB · Views: 21
Top Bottom