a ovo je DA8X
http://www.fetaudio.com/wp-content/gallery/da8x/img_4982o.jpg
https://www.synthxl.com/wp-content/uploads/2021/11/yamaha-DA-8X-Service-manual.pdf
Major parts in DA8X:
1. DIR2 chip: YM3436D – this is a digital interface chip accept both AES/SPDIF and Y2 format signal widely use in Yamaha products since 1988. It is used in D2040 also.
2. YM6067: Parallel to Serial and serial to serial buffer x 2 chips, one chip support total 4 channels digital signal.
3. SM5803APT: 18 or 20 bit 8x oversample filter x 2 chips.
4. PCM63-KY or Y: DAC 20bit x 8 pcs; well know ladder type DAC which sound best back in 1989 period.
5. IV op-amp: M5238 dual op-amp.
6. Drivers op-amp: NE5532.
7. Resistor is 1/8W metal film resistors; not like D2020 use RMA resistors.
8. E-Capacitor: Elna Durex grade, I dissolder and verify the capacitors are still very good after 30 years.
9. Output couple capacitor is MUSE bi-polar Green capacitors.
10. Other film capacitor are either 5% or Soshin brand.