Originally Posted by ClemC
Just purchased the SL-G700 and I'm trying to find out if anybody knows what exactly the 3 digital filters are and which are which. There is NOTHING in the very poorly written owners manual, other than mentioning them and the MQA decoding, and nothing beyond a mention of three selectable filters on the web. I know I should just listen to find the one I like the best, but it would be nice to know what each one is, IE- Brick Wall, No Pre ringing, etc. Anybody out there know ? Nothing in any reviews I've seen say anything about them.
BTW, this unit sounds even better than my older Sony SCD-XA5400ES player in all respects.
Definitely interested in you thoughts on the player, I've been considering buying one of these for a while. First they are hard to find, where did you buy it? Then listening impressions.
As far as digital filters the best source is this technical manual from AKM on the DAC chip itself. Quite extensive. The chip is capable of 6 filters, it looks like Technics only implemented three. The ones on the chip are:
32-bit 8x Digital Filter
- ShortDelaySharpRoll-off,GD=6.0/fs, Ripple: 0.005dB, Attenuation: 100dB
Sharp roll off would be brick wall. The frequency response curves for all these filters are also shown in the AKM manual. You can find the PDF file here:
My Oppo 203, with the AKM 4458 dac chip, also has 5 selectable digital filters. I'm not really able to tell them apart using analog out to my headphone using my sennheiser 800S headphones, but I've never spent lot of time trying. The default brick wall sounds good. Given the nyquist theorem, you would think brick wall would provide for the best conversion of the digital signal back to the original analog waveform, so I leave the Oppo there.
I'm excited by this player, and like the sound of the AKM dac in my Oppo, so the flagship dac in the SL-G700 is tempting. There are no Technics dealers within three states of me, and they are typically not sold by places with good return policies like Crutchfield, even though Crutchfield sells their turntables, so I've held off.
If you have headphones, I'd also be interested in your impression of the players headphone out ability. The few reviews on the player were great, but the headphone out was graded a bit lackluster.