The heat sinks were salvaged from various dead components. The amplifier is constructed on ~1.75' square protoboards from Radio Shack (276-148), but any board will work.Ģ. The amp will be carefully packed with plenty of cushion and foam.īuyers will have 30 days to return the amp.DIY IRF610 MOSFET ClassA Headphone Amplifier ProjectĤ hours ago 1. Let me know if you need a voltage other than 120V (US) and I can modify this for you during the building process. If you have any questions or concerns, please do not hesitate to contact me. Upgrades are available: please message me for upgrades Female vocals really shine through the Crackatwoa. The music really shines with live or acoustic music. Like the Crack, the Crackatwoa pairs well with high impedance headphones such as the Sennheiser HD 650's and the HD 800's. Bigger soundstage, incredible details, and an uncanny natural sound. The Bottlehead Crackatwoa is a nice upgrade from the Bottlehead Crack. Finally, I've listened to the amp with my own set up to ensure it was in proper working order. The resistances and voltages were then tested and passed all tests. Each terminal was carefully inspected to ensure that all joints were properly soldered. The wiring for this amp was done neatly to provide a pleasing appearance. It was then finished by hand with special oil with increasing grits of sandpaper between coats to get an ultra smooth finish. The chassis, transformer, and screws were painted with metallic paint. It is built to last.Ī great amount of detail was put into this Bottlehead Crackatwoa headphone amplifier. With this type of solder you will not have to worry about cracked joints later in the amp's use. This solder is top of the line and contains silver for higher conductivity. Includes Bottlehead Badge, Stock Vacuum Tubes, and Power CordĬardas quad eutectic solder is used for all my kits. You also have the option to send me the funds via PayPal so I can purchase it for you but you will need to cover PayPal feesīottlehead Crackatwoa with TwoQuiet Stepped Attenuator *120V (US) The kit must be purchased from Bottlehead and shipped to me. *****MADE TO ORDER***** 4 to 5 week turnaround time

Bottlehead crackatwoa