Sonzera 20 Tone Control

[ThatWizardGuy]

What Is The Build Date?

The serial number starts with AMP20, according to the PRS Product page, that means it was build in 2020.

 

[ThatWizardGuy]

The Serial number starts with AMP20, which according to the product information page on the PSR site, means it was built in 2020. But I purchased it a couple months ago, and it had not been in the music shop more than a month. Maybe PSR shipped them one that had been in their inventory since 2020. I'd like to know, if they did.

 

[DreamTheaterRules]

The Serial number starts with AMP20, which according to the product information page on the PSR site, means it was built in 2020. But I purchased it a couple months ago, and it had not been in the music shop more than a month. Maybe PSR shipped them one that had been in their inventory since 2020. I'd like to know, if they did.

That would be the first version if built in 2020. The T-B stack on the clean channel normally means it has a pre-chosen, fixed mids value. I don’t think it’s a baxandall, but will check.

The gain channel has standard B-M-T tone stack.

I don’t Think you mentioned which channel, or was it both, that you were asking about. Let me know and I’ll try to run a stack calculator for you.

 

[ThatWizardGuy]

That would be the first version if built in 2020. The T-B stack on the clean channel normally means it has a pre-chosen, fixed mids value. I don’t think it’s a baxandall, but will check.

The gain channel has standard B-M-T tone stack.

I don’t Think you mentioned which channel, or was it both, that you were asking about. Let me know and I’ll try to run a stack calculator for you.

Both. I'm asking if the tone controls are passive subtractive only, like a Fender tube amp? My ear tells me they are not passive subtractive only tone controls. I hear the pure sound of the guitar's tone with the knobs at 12 O'clock. Turning a tone knob all the way up appears to add tone.

 

[DreamTheaterRules]

Both. I'm asking if the tone controls are passive subtractive only, like a Fender tube amp? My ear tells me they are not passive subtractive only tone controls. I hear the pure sound of the guitar's tone with the knobs at 12 O'clock. Turning a tone knob all the way up appears to add tone.

I looked at the circuit briefly. I'll look again abut almost sure they're passive. Remember, even passive tone stacks can be scouped by design, so that opening them up makes more bass and treble but not because it's active, but because the tone stack passes a lot of bass and treble so it needs the knobs down some to tame it, and while passive it's designed that way. I'll look into this further with the schematic.

 

[Bogner]

Passive

 

[ThatWizardGuy]

With the tone controls turned up, I hear more base, (middle), treble than the guitar itself has when using powered monitor speakers. And more tone than I hear on a Fender 65 Deluxe Reverb, with the tone all the way up. I'm not complaining. I'm just baffled.