I dont see the balanced cable on the official website. Would you be so kind and link me? Thanks!
Edited by stasaki90 - 8/31/13 at 6:11am
As I pointed out earlier, buying an HDVD800 and using it single ended is really a waste in a couple of ways:
1) Nearly half of all those expensive audiophile grade components in the box are not being used. If they had built the HDVD800 as a single-ended device only with all those redundant componenets missing, It probably would have only cost half the price (well that analogy is a little silly in some ways but I'm using it just the same to make a point)
2) When Sennheiser designed the HDVD800, it was specifically tuned for the HD800, and for low noise and distortion they chose a fully balanced configuration outputting signal at a power level that can be considered "adaquate" plus some extra for headroom. When you plug into the single ended output, you throw away 75% of that power (i.e., your maximum output voltage level is cut in half)!
There are other related issues that I cannot confirm as I do not know specifics of how they engineered the circuitry of the HDVD800. For example, when you plug into the unbalanced jack, the return signal is PROBABLY re-routed to run through the power supply commons and the chassis itself (normally they are isolated from the actual signal in a balanced configuration. This would allow some of the output signal to get into the power supply in a way that can then affect the quality of the sound being generated. Normally in a balanced configuration the two voltage rails of the supply are running opposite each other, so the net impact of adding a signal to the amp is zero since any signal on the rails cancel each other. If you were building a typical single ended amp, the power supply would only need one section (instead of two), but would likely also have extra circuitry (e.g., larger components) built in to better handle this signal coupling issue. This extra "durability" in the power supply would not have been built in to the HDVD800 since it was intended to run in balanced mode where it wasn't necessary.
So when you run an HDVD800 in single ended mode you get:
a) an under powered amp
b) a non-optimised power supply relative to signal filtering
c) a whole box of very expensive components, a large portion of which are not being used
In short: lower quality sound and higher cost. The HDVD800 was DESIGNED to run full balanced. Anything else is compromise.
Hi guys -
For those of you that have heard - and if it has already been mentioned in this thread, my apologies for not finding it - how do you think the bass of the HD 800 is affected by the HDVD 800 and the balanced cable?
The hdvd800 gave the best bass I ever heard on my hd800s. I only heard it in balanced mode.Very solid strong bass bass bass
"Switching to the balanced cable with the coax-fed HDVD 800 it was immediately apparent that at the same volume level, there was more power and sonic impact than with the stock cable."
How do you know the volume was the same?
With the same source I used the stock cable and then switched to the balanced cable without changing the volume control of the HDVD 800.