Bad idea! The DL III does not have a volume control. If you plug this into an input without volume control you will send full voltage to your speakers. This would be the same as turning the volume all the way up on the integrated. Do you think your speakers (or maybe even the integrated) will survive this? Absolutely use the built-in pre. As for the hard sound of the DL III (non-modified), it’s been a long time since I had one but I don’t recall it sounded hard at all. Perhaps something else in your system is the cause of this?
14 responses Add your response
As soon as I posted this I had a thought about your integrated. Does the “Direct Input” completely bypass the preamp section as your post says, or does it bypass tone controls? If you don’t know look at your manual, but if you are already using the “Direct Input” and the volume control still functions then you are just bypassing the tone controls.
Missak, glad to hear my second response was the correct one. I followed the link but the writeup seemed like a sloppy translation from Japanese so I couldn’t make a lot of sense of it. I’m not familiar at all with Sansui equipment so I can’t really offer help on that. Not sure what speakers you are using, but I still think the issue is with something other than the DL III. Too many unknowns for me to offer any help, sorry.
I think I figured it out. I changed the sampling rate from 96khz to 192khz and the sound became smooth and "liquid". Since it is now late at night, I have heard in very, very low volume, so tomorrow I will check in a comfortable level. Still, it seemed to make a good difference. I hope I'm not mistaken.
Dear, pmotz. Do not worry, I appreciate your help. If you want to look at the schematic, the service manual is here: https://www.hifiengine.com/manual_library/sansui/au-a707mr.shtml
My (adorable) speakers are Harbeth Super HL5 Plus.
The USB input on the DLIII is the weak link. I used a USB?SPDIF converter with the one I owned.
Agreed. Now, with everything tidy, surely the SBT + S/PDIF + DAC configuration excels with mastery.
When there was the problem with the amp AC line, the SBT/coax sounded lean and with over-tight and hidden bass. In a way, the USB input seemed to come out better (less worse), although it was not good either.