Subject: [AUDITORY] What amplifier should I buy to drive Etymotic ER1 / ER2 insert earphones? From: =?UTF-8?Q?Bj=C3=B6rn_Herrmann?= <herrmann.b@xxxxxxxx> Date: Mon, 19 Feb 2018 15:28:47 -0500 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>Dear list, I have thus far used headphones for my auditory experiments, but a new experiment I am setting up requires that I use our Etymotic ER1 / ER2 insert earphones. However, the sounds (played through a Focusrite 2i4 sound card) are not loud enough (limiting the range of intensities available). I thus would like to buy an amplifier, but also hope for reasonable costs. What kind of amplifier would you recommend to drive Etymotic ER1 / ER2 insert earphones? Thank you in advance for any input you may have. Bjorn ---------- Bj=C3=B6rn Herrmann (PhD) Brain and Mind Institute The University of Western Ontario London, Ontario N6A 5B7 Canada email: herrmann.b@xxxxxxxx web: www.bjornherrmann.com