Subject: Re: [AUDITORY] Advise on coupling pre-amp to insert earphones From: "Picinali, Lorenzo" <l.picinali@xxxxxxxx> Date: Sat, 21 Jan 2023 09:07:56 +0000--_000_LO2P265MB1134967C6D4F732C998C9E4EBACA9LO2P265MB1134GBRP_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hello Liam, my advice would be to rely on the on-board headphone amplifier of the RME F= ireFace 400...the ER-3C are rather "easy" to drive, and the RME headphone a= mps are excellent. I don't remember specifically the FireFace 400 model, bu= t 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<https://www.axdesign.co.uk/> Dyson School of Design Engineering Imperial College London Dyson Building Imperial College Road South Kensington, SW7 2DB, London E: l.picinali@xxxxxxxx http://www.imperial.ac.uk/people/l.picinali https://www.axdesign.co.uk/ ________________________________ From: AUDITORY - Research in Auditory Perception <AUDITORY@xxxxxxxx>= on behalf of Barrett, Liam <l.barrett.16@xxxxxxxx> Sent: 20 January 2023 12:19 To: AUDITORY@xxxxxxxx <AUDITORY@xxxxxxxx> 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 EE= G set-up. I am currently considering how best to link these up to my HiFi s= ystem. 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 --_000_LO2P265MB1134967C6D4F732C998C9E4EBACA9LO2P265MB1134GBRP_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= > <style type=3D"text/css" style=3D"display:none;"> P {margin-top:0;margin-bo= ttom:0;} </style> </head> <body dir=3D"ltr"> <div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size= : 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class= =3D"elementToProof"> Hello Liam,</div> <div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size= : 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class= =3D"elementToProof"> <br> </div> <div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size= : 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class= =3D"elementToProof"> my advice would be to rely on the on-board headphone amplifier of the RME F= ireFace 400...the ER-3C are rather "easy" to drive, and the RME h= eadphone 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= . <br> </div> <div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size= : 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class= =3D"elementToProof"> <br> </div> <div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size= : 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class= =3D"elementToProof"> Best</div> <div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size= : 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class= =3D"elementToProof"> Lorenzo<br> </div> <div class=3D"elementToProof"> <div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size= : 12pt; color: rgb(0, 0, 0);"> <br> </div> <div id=3D"Signature"> <div> <div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size= : 12pt; color: rgb(0, 0, 0);"> </div> <div></div> <div id=3D"divtagdefaultwrapper" dir=3D"ltr" style=3D"font-size:12pt; color= :#000000; background-color:#FFFFFF; font-family:Calibri,Arial,Helvetica,san= s-serif"> <div id=3D"divtagdefaultwrapper" style=3D"color:rgb(0,0,0); background-colo= r:rgb(255,255,255); font-family:Calibri,Arial,Helvetica,sans-serif"> <div style=3D"font-family:Tahoma"> <div style=3D"font-family:Tahoma"> <div style=3D"font-family:Tahoma"> <div style=3D"font-family:Tahoma"> <div style=3D"font-family:Tahoma"> <div style=3D"font-family:Tahoma"> <div style=3D"font-family:Tahoma"> <div style=3D"font-family:Tahoma"> <div style=3D"font-family:Tahoma"><font style=3D"font-size:10pt"></font><sp= an style=3D"font-size:10pt"></span><span style=3D"font-size:10pt"></span> <div style=3D"font-family:Tahoma"> <div style=3D"font-family:Tahoma"><span style=3D"font-size:10pt"><br> -- <br> Dr Lorenzo Picinali<br> Reader in <a href=3D"https://www.axdesign.co.uk/" title=3D"https://www.axde= sign.co.uk/"> Audio Experience Design</a><br> Dyson School of Design Engineering<br> Imperial College London<br> Dyson Building<br> Imperial College Road<br> South Kensington, <span id=3D"ms-rterangepaste-start"></span><span>SW7 2DB<= /span><span id=3D"ms-rterangepaste-end"></span>, London <br> E: l.picinali@xxxxxxxx<br> <font style=3D"" color=3D"3366FF"><u style=3D""><br> <a href=3D"http://www.imperial.ac.uk/people/l.picinali" target=3D"_blank">h= ttp://www.imperial.ac.uk/people/l.picinali</a></u></font><br> <a href=3D"https://www.axdesign.co.uk/">https://www.axdesign.co.uk/</a><br> </span></div> </div> <span style=3D"font-size:10pt"></span><span style=3D"font-size:10pt"></span= ><font style=3D"font-size:10pt"></font></div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> <div id=3D"appendonsend"></div> <hr style=3D"display:inline-block;width:98%" tabindex=3D"-1"> <div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st= yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> AUDITORY - Research i= n Auditory Perception <AUDITORY@xxxxxxxx> on behalf of Barrett= , Liam <l.barrett.16@xxxxxxxx><br> <b>Sent:</b> 20 January 2023 12:19<br> <b>To:</b> AUDITORY@xxxxxxxx <AUDITORY@xxxxxxxx><br> <b>Subject:</b> [AUDITORY] Advise on coupling pre-amp to insert earphones</= font> <div> </div> </div> <style> <!-- @xxxxxxxx {font-family:"Cambria Math"} @xxxxxxxx {font-family:Calibri} p.x_MsoNormal, li.x_MsoNormal, div.x_MsoNormal {margin:0cm; font-size:11.0pt; font-family:"Calibri",sans-serif} span.x_DefaultFontHxMailStyle {font-family:"Calibri",sans-serif; color:windowtext; font-weight:normal; font-style:normal; text-decoration:none none} .x_MsoChpDefault {} @xxxxxxxx WordSection1 {margin:72.0pt 72.0pt 72.0pt 72.0pt} div.x_WordSection1 {} --> </style> <div lang=3D"EN-GB" style=3D"word-wrap:break-word"> <div class=3D"x_WordSection1"> <p class=3D"x_MsoNormal"><span lang=3D"EN-US">Dear Auditory List,</span></p= > <p class=3D"x_MsoNormal"><span lang=3D"EN-US"> </span></p> <p class=3D"x_MsoNormal"><span lang=3D"EN-US">I will be adding a set of ety= motic ER-3C insert earphones (50 Ohm) to my EEG set-up. I am currently cons= idering 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 signa= ls as well as using a microphone for online auditory feedback. I have a RME= FireFace 400 audio interface between the computer, microphone and the head= phones. 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.</span></p> <p class=3D"x_MsoNormal"><span lang=3D"EN-US"> </span></p> <p class=3D"x_MsoNormal"><span lang=3D"EN-US">Best,</span></p> <p class=3D"x_MsoNormal"><span lang=3D"EN-US">Liam</span><span class=3D"x_D= efaultFontHxMailStyle"><span style=3D"font-size:12.0pt"></span></span></p> <p class=3D"x_MsoNormal"><span class=3D"x_DefaultFontHxMailStyle"><span sty= le=3D"font-size:12.0pt"> </span></span></p> <p class=3D"x_MsoNormal"> </p> <p class=3D"x_MsoNormal"><span class=3D"x_DefaultFontHxMailStyle"><span sty= le=3D"font-size:12.0pt"> </span></span></p> </div> </div> </body> </html> --_000_LO2P265MB1134967C6D4F732C998C9E4EBACA9LO2P265MB1134GBRP_--