New Headphone amp are under developt.  It is upgrade from Jade. 12AX7 x 1 , 6AS7 x 2 , 6AS7 Loading by CCS. Top model will use Reed relay base 42 steps, step attenuator. It is 2db/Steps. Very low pop noise. It may be will release around 2 ~ 3 weeks. Other hybird Jade also will comming soon.

It is no problem to use driver tube with 600ma.  Driver Filament section of Jade can up to 800ma without problem.

Infite cap is better, Yes ! Upgrade to blue telfon socket US$10 for 3 sockets.

Damage of Pontential meter is not only packing problem but also structure problem. It is not mount on front panel but direct mout on PCB !  I had buy 5 Pcs but 4 Pcs damage ! May be can request mfg to mount volumn direct on front panel.

HD600 Cable length - 2M

Standard Jade ship to USA  - US$330 Standard Jade ship wihtin 2 days. Upgrade Jade  - 1 Week.   My Paypal : Joe@tubehifi.com

Thank for your support very much. Noise seem to be come from source  if it is volumn level depedence. amplifier has problem  :   1.           Hum at any volumn level. 2.           Hum at start , end or some dedicate level.  

I'm sorry ! I say 2A3 version of Jade is under developt but noise level still listenable. It will not release in a short time.

It will ship from HK tomorrow.

Quote: Originally Posted by cswann1 Uncle Eric once wrote that audio gear is fashion for men. We sometimes spend way too much time and energy (oh, and money) on equipment in hopes of removing the tiniest bit of perceived flaw. We love to discuss and compare our rigs with our fellow...

Quote: Originally Posted by LIos @ Hz_joe, Is it OK if I listen using both output at the same time ? I sometime listen to music with my brother and being able to use both simultaneously would be very practical. I would use it with a 32ohm headphone in one and 250ohm in the other...

Alps 27mm US$15 + Infinite cap (US$40) + neutrik Jack. - US$12 , Tube sockets US$10 Balance cable for Audiotailor Headphone amplifiers with 50% discount. US$60 x 0.5 = US$30

Quote: Originally Posted by Didege Funny yous ask now : i've tried this afternoon !!! But no way : tried with a small screwdriver, with a philips key : all to big. I wanted to reach this sunshine glowing led to cut it but it's not possible unless dismounting the board ! So this ugly...

It has special discount when buy together with our Headphone amplifiers.

We had imroved to much better quality now.

Quote: Originally Posted by donunus Are you still planning on el34s after the 2a3 version? Another question... What was the end result of the 2a3 version when using low impedance cans? Is the old Jade still better? Yes ! 6080/6AS7 is better performance in low impedance Cans. EL34...

Quote: Originally Posted by donunus Is the a3 available now? Any pics? wow I love 2a3 tubes!!! Prototype already tested with good result. We are redesign PCB to made it perfect. It will release after Chinese new year.

I had del some unread message today ! Please send it to me if not seen my reply!

I had found a design weekness on G3. it volumn control very easy to broken in shipping,due to it fix on PCB but no Screw nut fix on chassis. May be need to request them packing very carefully or modify it before ship.

Quote: Originally Posted by ecclesand Per the schematic there is already a resistor between the power supply and the LED. It is R31 with a value of 1KOhm 1/2W. I would send an email to Joe to determine what size resistor would work. Was looking at some pics I took of the internals...

Quote: Originally Posted by ecclesand I'm sure other folks have probably already done this, but today I replaced the stock film caps in my Jade with some Multicap RTX (polystyrene film/tin foil) and yowza! After about 6 hours of burn in I am hearing improved detail and a more 3D...

Quote: Originally Posted by Hygienist Is the Jade A3 going to be a higher end version of the current Jade? Jade-A3 use same topology as Jade but use difference output tubes only. It is not upgrade but use difference tube to have difference sound signature only. Jade - 6AS7/6080...

Quote: Originally Posted by jcoops16 The G3 is still for sale but at the moment, the G3-T7 is not available though. Hope it comes back on sale because this is the one I have been thinking about getting later on G3-T7 - I had some units on hand , can delivery from HongKong. 110V &...

Quote: Originally Posted by pekingduck Awesome! Can the A3 work as a preamp? It will have 2 version. 1 is full headphone amplifier. 1 is with pre-amp out & 3 Input.

Jade-A3 will be release soon. It is use 12AX7 x 2 as driver tube , 2A3 x 2 as output tube. We had test prototype and has a god result. 2A3 can replace by most of 2A3 , 300B & 45. It will have a switch to select filament voltage.