I mean desired hypotethical product using 2 in parallel thermal-effective (non SOIC) packages of BUF634a (x8 total) in balanced output stage with no addition of serial resistors and no semiconductor mute-switches after BUFs (equipped ES9038pro or AK4499 DACs). That should provide 500 mA...

@FiiO why don't you try to use 2 in parallel buf634a (in optimal thermal pad package) output configuration instead of OPA926 to TPA6120A2 switchable output for new devices? Switchable BW biasing in this configuration should be a win! There is even no need to use series resistor to provide very...

@Shanling could you connect with support@extreamsd.com to help provide support of Native DSD mode in UAPP ? I will be happy and grateful if there is support of Native DSD without forced background PCM convertion. (S-g Point: Every fully suppored player app from top of the list will increase the...

what re-calibration procedure you could recommend?

Disassembly process is similar to mobile phone tear-down via vacuum heater-separator used for mobile phones Be careful: There is wifi antenna wire soldered to back cover on the left side when removing back cover (to back side cover look). It's 2 tear-downs known to me and two wifi antenna...

Why would you, if you yourself chose a device with an AK4499 chip? - "AK4499 Premium Switched Resistor 4ch DAC" datasheet

This is an automated test using RMAA and Motu M4 Line In (+18dBU). The measurements were made by playing a test sound file through different players in High gain volume 100 and PO mode without connecting headphones (I can continue with headphones, heavy load). In the last column is the line...

@Shanling I kindly ask you to implement bit-perfect playback for Shanling and Edditct player applications when playing PCM. Obviously there is an aural difference with UAPP, which uses direct access to the DAC. This difference definitely feels like more space and reverb decay when playing...

Due to USB-DAC mode charging limitations I use charging M8 in bluetooth-DAC mode (bluetooth amp mode) using LDAC codec. Windows 10, Alternative paid A2DP driver (force LDAC HQ 96 KHz)

Could you also check on DSD tracks pls, I hear ~1.5s muted offset Should notice: this is related to switching between tracks, not single track conditions

Who has some info about this cable: https://www.aliexpress.com/item/1005001469501133.html this link was mentioned earlier in the table with measurements, but currently I see another product by this link, I could suppose this is some of currently unavailable models of "OpenHeart: brand

what difference do you hear with the short delay version of the filter? Do you know which filter reproduces the highest frequencies (eg 16 kHz) with minimal distortion? (According to the experience of measuring the shape of the sine wave of other players using motu m4 line in + ARTA in 24/192...

Short delay Sharp roll-off

Reliable and responsible seller. Very fast shipping and good packaging. Grateful for the opportunity to experience owning a DX200!