Thanks Ted for my SPC HD600 cable. It arrived perfectly even you had problem with the snow. Build quality great. Sound improved immediately without any burn in. Sent from my HTC One V using Tapatalk

Hi,   Have been modding WA6. Now have the first cap after rectifier as 30uf Mundorf.  After modding I have about 100V to 105V going to plates of driver tubes.  I forgot to measure before modding, so not sure if it's too low or too high.  But the amp has been sounding alright with no distortion...

Tungsol 6sn7gtb angled plate. Rca6sn7gt gray ladder plate

Hi, I have been lurking around the forum for a while and must thank all of you for such a valuable info. I own wa6, it came with stock 6dr7. I later upgraded to 6sn7 with adapter from woo. 6sn7 gives a lot more detail across all range from treble to bass, but the 6dr7 has more gain. I use...

Hi, Looking for new cable for hd600. Looked at headphone lounge website and saw there are 3 types of copper cables. 1. Pure copper, 2. SPC and 3. Hybrid copper tin. Do you know what are differences among 3 types in term of sound? Or should I bite my wallet and just go for the silver? My...

Hi,   I'm quite new to 6SN7 and recently bought a pair of used Tungsol 6SN7GTB black pate with D getter.  After turned the tube on for about an hour I noticed one tube developing some sort of fog in side (bottom right).  Wondering if this fog could be a sign of this tube losing its vacuum? ...

I guess I will put Sophia in drawer until I change the 1st cap to 4 or 10 uf. Can I use non-polar cap for this? Like the cap the use in speaker cross over. Or this is limited to polarized cap? Any recommendation on the brand I should use for this?

Hi,   Understand that this thread has been inactive for a while.  Have been reading through the mod topic and info is very very good, and I definitely understand a lot more about the Woo6.  I am completely new to DIY but this thread got me interested and now I have changed the coupling caps...

Thanks I got in contact with Glenn and he is very responsive. He is willing to make the adapters. The should open great possibilities[ of tubes rolling. Cheers

Hi, I have recently committed myself to a WA6, and new to tube rolling in this amp. The amp came stock with Chinese 274b and 6dr7, and I guess there is a lot of potential to be explored with other tubes. Rectifier tubes are fairly well explained but I am confused with tube adapters for 6sn7...

Hi All, Have been reading great feed back in woof amps and I am considering an entry level Woo amp may be a WA6. Just wondering how it would pair to Grados 225. I do not see many people in the thread pairng Grodos with Woo at all. Another opinion would be highly apprciated, if I should bite...

Hi Audiofanboy, Yes the 6n1p works as power tube on mkii. Initially i thought that it sounded smooth will slikier highs, clearer presentation than the 6n6p. But after a while of listening the effect was actually 6n1p not having enough power to drive grado 225i. It sounded ok when the volume...

Hi, I am new to the little dot amp and just received an MKii. Thanks all of you for great posts that helped me understand a lot about the amp. I started tuberolling and accidently bought 6n1p-ev instead of 6j1p-ev. Later i found out that the pin out of the 6n1p-ev are the same as the power...