[SoulSyde]

It's odd because they appear to be the same symbol instead of the larger vs smaller waveform that Jan uses to typically indicate high vs low gain (see the center button in the picture).

 

[uelover]

Intensity of crossfeed?

 

[Argo Duck]

Taking a hint from the StageDAC, and considering it's on the cross-feed side, it may be intensity or perhaps a combination of delay/intensity.
 
Likely Jan will see these questions and clarify at some point...

 

[incus]

input source selector

 

[SoulSyde]

Quote:

input source selector

Thanks.  Welcome to Head-Fi.

 

[cooperpwc]

Definitely not input source selector.
 
Sorry about your wallet. 

 

[Okkultus]

It's the gain switch, like on the Corda Jazz.

 

[Argo Duck]

If it's the gain switch, what's the one immediately left of the volume control?
 
Maybe we should take bets until Jan puts us out of our misery 

 

[Jan Meier]

Dear headfellows,
 
it's nice if life has some mysteries left. But nonetheless a short description of the control elements on the CLASSIC:
 
From the left to the right:

- input selection switch (2 pairs of inputs)

- crossfeed intensity
lower position: Medium
middle position: Stereo (crossfeed off)
upper position: High

- Bassenhancement
lower position: Medium
middle position: Flat (enhancement off)
upper position: High

- Headphone socket

- Gain-switch

- Volume control

- On-Off
 
Cheers,
 
Jan

 

[Argo Duck]

Thanks Jan! Look forward to more details soon, as it is not long to December 

 

[incus]

Quote:

Definitely not input source selector.
 
Sorry about your wallet. 

 
Check

 
 

 

[cooperpwc]

Quote:

 
Check

 

Lots to be sorry about. 
 
Quote:

Bass enhancement lower position: Medium middle position: Flat (enhancement off) upper position

This is a nice feature. I wonder: does it relate to making the cross-feed more natural or is it an entirely separate enhancement?
 

 

[uelover]

Quote:

I wonder: does it relate to making the cross-feed more natural or is it an entirely separate enhancement?
 

The bass boost on StageDAC is a separate feature apart from cross-feed.

 

[cooperpwc]

Quote:

The bass boost on StageDAC is a separate feature apart from cross-feed.

Thanks. This amp is more intriguing all the time...
 
 

 

[Argo Duck]

Certainly it's separately operable, but its intention is to compensate for some perceived slight energy loss below 2kHz which Jan's cross feed circuits may produce. You can find this discussed in the section 'Tonal balance' in the STAGEDAC manual.
 
I believe Jan is saying this is psychoacoustic rather than real loss (I hope Jan does not mind this quote): "In headphone mode signals that are no longer present in one channel only....no longer stand out and this may feel as if the energy in the frequency range below 2 kHz is slightly reduced. This can be compensated by the ... switch..."