Crackatwoa Headphone Amplifier


You can learn more about the TwoQuiet upgrade for this kit at this link.



This product has a universal power transformer and can be used worldwide by following the wiring instructions in the manual. Please note that international customers will need to provide their own power cord.

SKU: CTA Category:

Crackatwoa headphone amplifier kit

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. There are three pairs of RCA input jacks and a volume and balance control. The standard potentiometer controlled volume/balance setup will be upgrade-able to a coarse and fine stepped attenuator very similar to the BeeQuiet attenuator used in the BeePre preamp and a similar style used in our most premium Mainline headphone amp. Like Crack this amp is intended to be used with high impedance headphones (200 ohms or higher) like Sennheiser HD600/650/800, Beyerdynamic 250 and 600 ohms headphones, etc.

One big consideration was that this kit was to fit between the Crack and the Mainline in terms of price. We wanted to keep the price below $700. With that in mind we decided that the biggest benefits would be from a more sophisticated power supply and the ability to upgrade to our very special stepped attenuator as used in BeePre (and in a slightly different form in Mainline). We also know that our customers like to have multiple switched inputs, so we include three.

(See ‘more’ tab…)

DISCOUNTS: When you buy 1 > Regular Price: $699.00USD • When you buy 2 or more > Sale Price: $629.10USD • Save: $69.90USD (10%)!

Your pre-order will be charged the day the kit is ordered. We do this to allow cash in advance payment to our vendors to keep the price you pay as low as possible. DIY audio is a very focused esoteric market. We are a small staff with a large passion, attempting to offer the broadest range of kits possible to those interested in this exclusive pursuit of ultra high quality audio reproduction, Thus each kit is manufactured and packed to order, and the production and packaging schedule is influenced by demand. Please understand that our shipment can take up to 3 to 6 weeks when demand is high. You may check how shipping is progressing for a kit by looking here.

Additional information

Weight 14 lbs
Dimensions 14 x 14 x 8 in
Upgrade Options

Crackatwoa, Crackatwoa with TwoQuiet Stepped Attenuator

You may also like…

Top of the line Mainline headphone amp kit on sale thru June 23rd. We have moved! Check the Contact page. Dismiss