Hi Jesse,

Input of one unit will shunt the input of the other unit.
Frequency response of each unit will be changed depending on the input 
impedance of both units + capacitance of each cable
(confirmed by measurements).
Simple resistor splitter will give you high signal level loss.
To compensate the signal level losses you need to increase input sensitivity 
simultaneously increasing noise floor.
To get really independent performance of the system without signal level 
loss, you need a distribution amplifier.
I use the ELAN Audio "RDA-02 AUDIO DA" in my studio, did similar 
installation for The National Library of NZ for Dolby A and Dolby SR 
parallel decoding.

Best regards,

Gennady Lyskin

G e n n L a b
[log in to unmask]
Tel: +64 21 238 3056
New Zealand
----- Original Message ----- 
From: "Jesse Kenas-Collins" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, January 31, 2021 5:40 AM
Subject: [ARSCLIST] parallel transfer / attenuator design

> Hi All,
> I have a question for those more literate in electrical engineering than I
> am.
> - I've been using a Rek O Kut ultra preamp for flat and RIAA transfers, as
> well as a first generation KAB VSP Souvenir for listening to 78s. I would
> like to run my turntable through both simultaneously to achieve parallel
> transfers.
> - My understanding is that I could split the signal from the output of the
> Rek-o-kut (set to flat) and send one path to my audio interface and the
> other path through an attenuator bringing the signal back to phono level,
> then into the KAB.
> - First of all is this a ridiculous idea? If not, any recommendations for
> designing / building an appropriate attenuator? ( my soldering and
> schematic reading skills are rudimentary at best).
> Any way I would certainly welcome any alternate recommendations / 
> solutions.
> Much thanks,
> Jesse Collins 

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