Re: [AUDITORY] Advise on coupling pre-amp to insert earphones

Subject: Re: [AUDITORY] Advise on coupling pre-amp to insert earphones

From: "Picinali, Lorenzo" <l.picinali@xxxxxxxxxxxxxx>

Date: Sat, 21 Jan 2023 09:07:56 +0000

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Comments: To: "Barrett, Liam" <l.barrett.16@xxxxxxxxx>

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Reply-to: "Picinali, Lorenzo" <l.picinali@xxxxxxxxxxxxxx>

Sender: AUDITORY - Research in Auditory Perception <AUDITORY@xxxxxxxxxxxxxxx>

Thread-index: AQHZLMf4COjw5tkivUKUKpGZfr5+mK6olTiA

Thread-topic: Advise on coupling pre-amp to insert earphones

Hello Liam,

my advice would be to rely on the on-board headphone amplifier of the RME FireFace 400...the ER-3C are rather "easy" to drive, and the RME headphone amps are excellent. I don't remember specifically the FireFace 400 model, but I believe it has a digitally controlled headphone level, so that you can calibrate that and get repeatable results.

Best

Lorenzo

--
Dr Lorenzo Picinali
Reader in Audio Experience Design
Dyson School of Design Engineering
Imperial College London
Dyson Building
Imperial College Road
South Kensington, SW7 2DB, London
E: l.picinali@xxxxxxxxxxxxxx

http://www.imperial.ac.uk/people/l.picinali
https://www.axdesign.co.uk/

From: AUDITORY - Research in Auditory Perception <AUDITORY@xxxxxxxxxxxxxxx> on behalf of Barrett, Liam <l.barrett.16@xxxxxxxxx>
Sent: 20 January 2023 12:19
To: AUDITORY@xxxxxxxxxxxxxxx <AUDITORY@xxxxxxxxxxxxxxx>
Subject: [AUDITORY] Advise on coupling pre-amp to insert earphones

Dear Auditory List,

I will be adding a set of etymotic ER-3C insert earphones (50 Ohm) to my EEG set-up. I am currently considering how best to link these up to my HiFi system. Specifically what spec pre-amp I should find to couple the earphones with. I am intending on presenting both computer-generated signals as well as using a microphone for online auditory feedback. I have a RME FireFace 400 audio interface between the computer, microphone and the headphones. I am looking for a pre-amp that will generate excellent SNR. Any suggestions or advise on setting up this interface would be greatly appreciated.

Best,

Liam