I think it isn’t so much a case of pre-dating line level, but more like who is the target audience for the device. The flesher type units were definitely consumer-grade items. And the consumer equipment would be less likely to have line level outputs and inputs. Hence reliance on speaker output level and frequently mic-input levels. However, if the audience is commercial or military there would be a much greater likelihood of having line-level equipment to interface with. That is my 2c take on the subject!

From: [email protected] <[email protected]> On Behalf Of steve bennett via GreenKeys
Sent: Friday, February 17, 2023 12:11 PM
To: GREENKEYS BULLETIN BOARD <[email protected]>
Subject: Re: [GreenKeys] Flecher TU170 signal levels?

Thanks to everyone who replied.

I sort of suspected these devices pre-dated the use of "line level" signals.

-Steve

On Friday, February 17, 2023 at 11:34:36 AM EST, steve bennett via GreenKeys <[email protected]> wrote:

What are the Flecher TU170 signal levels?

Is it compatible with "line level" signals like the ones used to interconnect stereo audio equipment?

Or would you drive it from a headphone jack?

Thanks,

-Steve

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