if you are not wanting to use computers, DVR 's work pretty good, if you can get a good ANALOG (microphone) to DIGITAL (dvd encoded audio) converter. The DVR will of course come with one, but utilizing the SPD/IF (digital coax signal INPUT on the DVR ) through a higher quality equipment will achieve - yep: higher quality on the disc.
If you don't give a hoot about "UBER QUALITY" , using RCA (red, white RCA's on back of DVR) inputs can do well, might want to keep the signal down with a leveler or some sort of EQ, so you don't burn up your DVR's precious inputs. After all, we like it loud, but your level clipping too high will not cause friendly distortion, but nasty clipping. Clipping is known to ruin alot of high frequencies! Thats why I love my good 'ole tape deck and LAME Encoder !
The red-white are Analog, and converted internally to Digital, so you are subject to the DVR's internal A. to D. conversion chips. You might want to research a bit (and shell out more $$$) if you got to have it sound good through the analog inputs.
Also: DVR's will record in 48000 sample rate, wheareas the standard audio cd does 44100.