No need. Go ahead with the OTA v2.01 :)

Cant agree more. I went NOS tung sol 5998 power tubes and amperex 6922 orange globe driver tubes. A-B testing with stock tubes have massively upg. I have ZMF verite, aeolus and HD800S (most surprised to enhance the weak points of these cans). Take your time and enjoy the searching process! 😊

v2.01 installed. Battery issue is fixed. Thanks Ibasso for prompt fix. I notice a slight change or potential improvement. The screen becomes slightly over sensitive. e.g I swiped through the mango player in the song list. sometime it would treat as touch/select then it will play the song...

Anyone experienced android 11 not as snappy as before. I tried v2.0 then use tool 660 downgrade back. Wonder v2.01 has improved?

it works. Thank you :)

Thanks man. can you share the 600 tool link again. it's a dead link. cheers.

Hello. May I know how you roll back to previous firmware. I tried 1.07.390 with local update but not allow. thks.

Hi Guys, I have the same issue with battery drain and laggy interface of firmware v2.0 . I tried to installv1.07.390 but not allow me to do so. Any tips for me? thks.

Power: TS 5998 Drivers: amperex orange globe 6dj8 (lusher, punchier), sylvania 7308(more transparent and dynamic) RT: lorenz ez81 (I have only tried this and it's better than the stock EH6CA4) All have the 3D effects. Note: I use stock Universe pads. Pad effect from ZMF website. Just my 2 cents...

Anyone the power consumption in watts for WA2?

Power tubes (6080, 6AS7, 5598) comparison. FYR. https://www.superbestaudiofriends.org/index.php?threads/bottlehead-crack.120/page-3

Agreed. I use a pair of 6CA4 EZ81 Lorenz NOS made in Austria. costed me $25 sounds better than stock EH 6CA4. Drivers and Power tubes have the most effect on SQ and S preference.

**Price:699 **Currency: USD **Ships to: Anywhere Cayin HA-1A MK2, very good condition (Please find the photos). great power and tubby sound. Good for all HPs (DDs, Planers) 5 levels impedance switch. 2 inputs (left more dynamic, wide soundstage, right more lush and intimate good for vocals) I...

I see you have DX300 me too (with Amp12). Have you compared with M9? which one you prefer? :wink:

anyone compared with AK SP2000? Who wins? thanks.