spritzer

100 of them take up a bit of space so I imagine 1400 could take up a pallet...

I like that one a lot. Something about the difficult ones...

Hmmm superconducting flooring would make millions!!!

I could always send Justin the highly modified LL1 to measure. It's not like it isn't just gathering dust here but it wouldn't give the right impression as unlike the stock version, it's not a shitstorm of distortion. I have an Exstata too somewhere though it was a highly modified version. One amp I'm truly interested in seeing measured is the SRA-12S as it was their first foray into solid state. The T2 was a crazy project, we haven't done one of those in a while. I've been gearing up to rebuilding the amp section in mine and reworking the PCB design quite a bit in the process.

Both I'd think. There is a picture in the largest national newspaper here today of a high end system (Pass pre and power amps feeding ESL2905's) and it has those idiotic stands too.

Hot off the presses, KSSHV mini THD measurements. I asked Justin to measure my first prototype of the mini and here are the results: Compared to the BHSE measured using the same setup: This is very impressive indeed and I'm sure the second version is a bit better as I switched to 2SC4686A's for that one for lower Cob.

Higher voltage means less current so easier to power using regulated DC. No possible to do on the current boards without cutting some traces.

I'm out of boards but we can supply you with the gerber files needed to have the boards made.

The real curse is to know all the CC details by heart. Well that and Paypal... bloody paypal...

Same Chinese stuff as you can buy on ebay. It's normally pretty nice if the seller can be bothered to package it properly...

That looks good. I still don't know why we made the front end filaments 6.3V though. They really should have been 12.6V or even 25V. Hell a LM7824 with a diode on the ground pin would be perfect for that.

No problems with the mini but for a first build, it will bite you and bite hard. I'd do an onboard as then it can be tested safely and then assembled.

Ditto but sometimes it is just a pain.

This shit happens to me all the time. I keep getting notices from customs about some packages that I don't have a clue about.

Happy Birthday!!!

This one does have to be fixed as there are a number of issues. Heatsinks should be soldered down and grounded, the ground plane in a mess so not working properly and one resistor per side is running right on its limit. There are also some small changes to part values and ideally they should be put right plus the transistor mounting to the heatsinks needs work.

Indeed...

Minor detail...

I forgot about the tiny heatsinks.

Not sure about the low voltage caps but the high voltage supply should have no problem with higher AC input voltage. The PSU is regulated so the output is fixed, the only issue being the prereg DC voltage not being excessively high for the filter caps. Try to ask SumR to use a larger core. That seemed to help when I was working on this with him. As others have said, tubes aren't just tubes in the same sense that not all transistor devices are equal. To think of tubes being different to transistors would be a fallacy as they both do the same job and can often be used in very similar circuits. There are differences in the same sense that bipolar transistors and mosfets aren't the same thing but the key difference is how any component is used. The Stax 007t and the BHSE are both hybrids with similar rail voltages and many parts of the solid state circuit are similar. How the tubes are used couldn't be more different though. The 007t tube stage could just as well have been designed in the 50's and is just about as simple as they come. The later version have added bits here and there but the final design is always the same. The BHSE on the other hand is radically different. Active circuits set the correct operational area for the tubes so they don't rely on the massive drift found in passive devices. The tubes are also wired differently for even lower distortion so this is far from a normal tube amp. Moar expensive doesn't mean better tubes. Shuguang is a good example of that and I for one would never use anything they make, in any of my amps. The old Mullards were simply better made than anything today so that is the biggest factor.

Yup, that's correct and it has been fixed.

I'm happy that I finally sent Kevin something he likes. Last time was a Liquid Lightning which he wasn't too happy with... Is the pot a real Alps unit or a fake? Can't tell from the pics...

Please don't compare anything here to HF. Here we can state our opinion, backed up by copious experience, and it is accepted as such. The LCD-3 isn't bad by any means but the model released three years ago is far from the current offering.

The shipping for the KGSS was just over 113$ for a 6.5Kg package. The transformer is a Talema unit so odds are that it has dual primaries. We are famous... http://item.taobao.com/item.htm?spm=a230r.1.14.72.YKuenw&id=37960660378 I say a new project with a new thread. Make it easy for them... Seriously, the only thing stopping us are those damn P-channel Jfets. Are any of the Fairchild parts usable?

Have a head banging birthday Justin!!