a trip to cd-r king store i spotted this small DVD player worth 880 pesos, i needed a CD player in my work table so i bought it, unpacking it at home i hook it up to my tube amp, to my disgust my tube amp sounded like a gainclone, too bright and harsh, hooking it to my class A solid state it sounded even worse...
the player, RCA cable & 5V power supply included
slightly larger than a CD case
so i decided to mess around with its audio circuitry, an op-amp feeds the output jacks, how about by-passing the op-amp?....
here is the two e-caps straight from its D/A converter
the tweaks made, replace the e-caps with a new one, bypass the op-amp at the expense of a lower voltage swing at the output (i'm using a high impedance tube per amp anyway so this would never be a problem
the blue & green jacks will now be the audio out
a few listening tests....now much better, 75% of harshness is gone, anyway, i don't expect it to sound like a high end CD player, what do you expect from 800 pesos
now covering up, oopps, i tear up the warranty seal, there goes my three month service warranty
a player not bad if you perform these tweaks / mods, no issues on the video though,...
Before the tweak i'd rate it 2 out of 10 after tweaking i'll give it 6 out of 10
Summary: nice cheap daily audio/video player that can run even on batteries, but not recommended for serious hi-fi listening