What is the recommended usage hours per day for the Crack ? Would it be suitable for gaming, and turning the crack on for 8-12 hours per day ?

How does this compare with the Piston 3 ?

Anyone out there still using this bad boy? Friend may consider selling his Ref One DAC to me or are there better synergy with newer amplifiers?

My crack is dead quiet at minimum volume up to about 1-2 o'clock on the knob. But when I turned off the music and maxed out the volume knob...around 2 o'clock there was some slight hiss...kinda like a white noise and grew louder as I maxed out the volume knob.    Not complaining because I...

How does a 6BL7 compare to the 5998 TungSol ?

Just bought my first amp - a used Crack + SB that comes with tubes How are these tubes and what config should I use with the Sennheiser HD650 ? And how much these tubes worth ? What upgrade should I be going for first ? Below are the seller comments

Would like to know this too as I have a HD650 Which amp did you go in the end?

What amps do you suggest with the HD650 ?   The ones on my radar are : Bottlehead Crack + Speedball, Valhalla 2, La Figaro 339

    Hey I was Rohan's friend yesterday and thanks for having us! I had a splendid time and learnt a great deal considering I was the newbie yesterday :)  Yes, I have emailed Clarry and will follow up with a phone call

Anyone know a builder in Auckland who can solder/assemble/test the Bottlehead crack + speedball ?

Hi, I am new to this and looking for an amp for my HD650. How well will the Elise match with the HD650, and how does it compare with the BH Crack + Speedball ? What tubes goes with the Elise and HD650 ?

  I mean convert from USA to NZ. I live in New Zealand   So I guess i will need a step-up transformer ? 110V to 240V ?   Any suggestion on brands I should use ? Or can i pretty much use any transformer from the hardware/electronics store ?

What do I need for Cracks (US Voltage) to be used in EU/AU/NZ countries with 230V ? Can i simply use a transformer ? Or would it need to be a specific spec - ie frequency etc?

How does this compare with the Bottlehead Crack + speedball ?    I am debating between the two. And does Yuking markdown parcel value to avoid customs ?

What tubes do you suggest with the HD650 ?