Bottlehead Crack

Well, I ordered the Crack- waiting ever so patiently. I'll be using HD600's with it. I am impressed by the forum.

when soldering I always try to use, if space permits, a Hemostat as a heat sink. I hope not to fry anything. I hate soldering IC's so what I always do these days is use IC sockets, solder those in place, and then just plug in the IC. No more fried ICs. No ICs in the Crack- yeah! I am looking for a DAC- will consider the EE.

At some point down the road I might get the speedball. Who knows.

I'm looking forward to this build as I have been itching for a DIY project for a while. My last project was repair a Sony XBR TV that died n 2013. I refused to accept its death, and with the aid of Google I learned this was a familiar issue with my particular model. $20 or so in parts later, TV is back up and running (2 components on the power supply board failed)

It will work but not sound it's best. The output impedance of the Crack is too high. Low frequency response will be down maybe 3 db or so

Ideally you want to sprun headphone with at least 150 ohm input impedance with the Crack.

Sine my original post here I've had my Crack for ver a year. It has the speedball and otheR mods. With the right headphones (hd600's work very well) it's a stellar headphone amp

The -3dB is somewhere on the Bottlehead site

Go to the Bottlehead crack forum, FAQ section, question #6. Using a 32 ohm headset, you'll be down 3 dB at 50hz