Vintage audio upgrade mod Board AD1868

kaosun

Every one of you knows DENON DCP150 for its premium and detailed sound quality. But at present the quantity of DCP150 is insufficient for everyone to possess.

The vintage CD players you have are most likely D33, D90, D35 and so on, did you dream that one day you can update your CD players to be a DCP150?

Now, we copied the original circuit of DCP150 from digital filter till earphone amplifier so that every vintage CD player can have very close audio quality like DCP150 after installing our update board.

The update board is consisted by digital filter, digital analog converter, low pass filter and earphone amplifier(coming soon). The earphone output power is 20mW + 20mW, it's powerful enough to drive most earphones.

The board also carries with a DSL switch which can be placed at OFF, DSL1 or DSL2. If your player originally carries with a DSL switch(like D33), it's OK for us to modify your circuit to make the switch usable for the update board; otherwise we'll place the switch on DSL2 by default.

This might be the cheapest way to get the best sound if you're interested in it.

kaosun

The board is consisted by digital filter: SM5840 (SEIKO EPSON), DAC: AD1868 and OAMP: NJM2100. The crystal is 16.9344Mhz ceramic SMD package made by KYOCERA.

sdxdzaoyi

Ask kaosun: what is the difference between SM5840 and SM5874? My machine is Aiwa XP-77, is using SM5874, I personally feel the effect is still possible.Because I was not using SM5840 CD

kaosun

sdxdzaoyi 2016-03-10 06:50
Ask kaosun: what is the difference between SM5840 and SM5874? My machine is Aiwa XP-77, is using SM5 ...

There's no diff between 5840 and 5874.  The sound is determined by DAC and audio AMP.