#BOTTLEHEAD CRACK W/SPEEDBALL UPGRADE#

Bottlehead is an established maker of high-end amplifiers, including vacuum tube-based, headphone, and preamps located in Bainbridge Island, WA.

#BOTTLEHEAD CRACK W/SPEEDBALL UPGRADE#

The Speedball upgrade is a Camille Cascode Constant Current Source upgrade for the Crack - replacing the 22k1 ohm plate loads of the 12AU7 with C4S load, as well as the 3K ohm cathode load resistors of the 6080 triodes. Sennheiser HD 580 / HD 600 / HD 650 / HD 800 Beyerdynamic DT 770 / DT 880 / DT 990), generating approximately 300mW of output power. I also highly recommend the Speedball upgrade. Bottlehead Crack Coppermine Edition IвЂ™m going to guess that the Crack is BottleheadвЂ™s all time most popular.

There are three pairs of RCA input jacks and a. Classifieds: FOR SALE - Bottlehead Crack with Speedball - no mods asking for 600.00. Crackatwoa is a premium version of the direct coupled Crack circuit with the C4S active loads of the Speedball incorporated, and also shunt voltage regulation in the form of two 6AQ5 tubes along with a bigger power transformer. This output transformerless amplifier is perfect for high impedance headphones above 250 ohms, (e.g. The bottlehead crack was tempting when I was researching amps. This is the Crack that was used to write the assuembly manual, and was fitted with the original Speedball board (note the different color and humorous text on the PCB). The Bottlehead Mainline is the top of the line DIY headphone amplifier in BottleheadвЂ™s range. This is in excellent condition and has traveled with the Bottlehead team to headphone shows. Just finished my Bottlehead Crack YHWHandSon Modi 2 -> Crack w/ Speedball -> Grado RS2e 15. So I listened to the stock Crack for about one day and then installed the Speedball. But the build was too much fun for me to stop.

Two additional old stock 12AU7 tubes will be included if purchased at the Buy-It-Now price. Bottlehead suggests listening to the stock Crack for a bit before installing the Speedball upgrade. Included with the amplifier is a power cord, Tung Sol 6AS7G, and GE 5814. Bottlehead Crack OTL Headphone Amplifier w/Speedball Upgrade For sale is a built-by-designer, Bottlehead Crack OTL headphone amplifier with Speedball upgrade.

Bottlehead crack w/speedball