TC Electronic BAM 200 TRS input?

[J_R]

Hi,

I've just seen on @disssa 's website a picture of an opened BAM 200 amp
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and noticed that the input uses TRS (=3 contacts, like the phones out, whereas the speaker out is only TS).

Anyone got any ideas why they used a TRS socket?
Maybe it is possible to use this amp with a symmetrical input, stereo input or similar?

Thanks
JR

 

[La Faro]

Could it be capable for balanced cables. The DI is a balanced out, but the manual mentions nothing of a balanced it.

 

[ahc]

Pure speculation here but it might be used for switching something in the amp like a TRS is used in an active bass output jack to connect the battery and power up the bass's preamp. They're also used in some amp's effects loops to disconnect the preamp from the power amp.

 

[La Faro]

Sorry it is in the manual. Page 20. Says TS
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[Redbrangus]

It's not uncommon for manufacturers to use TRS jacks for TS purposes. There's not an appreciable price difference and it reduces the number of different parts to source and keep in inventory. A glance at the schematic would tell you if the ring terminal is actually connected to anything.

 

[La Faro]

Whats odd though, is the TS jack that's used on the back of the unit

 

[J_R]

Whats odd though, is the TS jack that's used on the back of the unit

That's why I was wondering about the TRS input. Otherwise, I'd have said the same as @Redbrangus

And unfortunately, I couldn't find any schematics...

 

[La Faro]

Me neither, pretty poor not to provide schematics. I have a BQ500 sitting in customs. I don't want to open it to check the circuitry. I have 2 channel strip racks in the UK, that both output Balanced and unbalanced, so it could be useful to know