Nice work! I also realize they has black cushions and the leather headband having those knockles resting to your head. Do you remember if yours also had black or grey foam in front of the drivers? (I suppose black has higher density than the grey one´s) It seem´s AKG/Harman has made a lot of...

My modded K701 have just beenburned in with white and pink noise/sine waves for two days now, at around 70 - 80 dB. Then compared with a pair of HD650, and both me and my father considered that the K701 sounded softer, more open and clearer with a stronger/heavier bass than the HD650 which...

Many people can´t understand why AKG (Harman) choosed to assemble those two stickers at the back of the drivers, but I´m pretty sure why; As all those headphones are intended for use in studio with mixing/recording, it´s preferable to have the detailed sound with extended treble, and they do not...

I know that it is actually considered wrong in HiFi to connect a DAC with only an unbalanced RCA output to dual amplifiers with a Y-split cable, but since I connected so without noticing any problems, it has worked pretty well. However, I should add that I only use one amplifier at a time. But...

Or if anyone is interested, I can assemble a unit as I have components and PCB for spare. I live in Sweden, so preferable in Europe.

Most of the China clone kits at eBay/Aliexpress will have the cheapest components, I suppose that´s the reason many amps will fail or measure badly. They also use to have blue coloured PCBs. Many caps and resistors will not have the best quality or correct values, but should however work (for...

My LBC amp is working flawlessly perfect! And as many people are worried about the amp are generating a lot of heat (mostly when used in BIAS Class A) and the enclosure has no ventilation holes, my solution about heat (sseen in the pictures above) was to use an aluminium plate to build a...

I think I also used a small flat screewdriver at the side of the knob to remove it, that get only some tiny scratches.

Maybe it will get off if using some rubber between your fingers and the knob or at least wash your hands and also the knob before (dish soap will be fine) and be really dry, for better grip. It will need some quite much force to remove it from the volume attenuators shaft.

Today I swapped out the AK4490 DAC to the AK4399 DAC, that I recently modded with some "Snubbers", and right now listening to the free french FLAC-streaming Frequence3, really enjoyable with pure CD-quality! Usually, a DAC or Amplifier - schematic are designed with a Power stage with at least...

And here is an even more colourful one, once again a bit more modded:

I took some time to play with the black and white DIP switch settings label, and add some colour to it. Note that I removed the High voltage warning and maked a Check for 220 Volt version.

Listen right now to Tidal with MQA Master, using my modded China DAC with AK4490 without upsampling and Burson Vivid; the sound is SOOO transparent, clear, airy and bassy! The AK4490 are famous for it´s "Velvet sound", with it´s loudness like sound. However, it sound really nice to me! I also...

I hav´nt had any big issues removing the DIP-socket protection - only when I used some heavy force to it, the reddish enclosure came off on a few of them. Normally, I´m using only my fingers te take the protection off.

Yes, I remember the Alps volume pot needed quite alot of force to remove! When I reinstalled my new board, I add some thermal heat paste (for PC-usage) between the transistors and the enclosures bottom for maximum cooling. And the best way for reassembling, is to fastening all screws half way...