Yes I understand and respect that, although not my quite question
So essentially, you saying that if the unit is modified, in this case with a proper power supply (that dosent require any soldering) , if there were a fault to develop, this would be repairable at a cost?
It wasn’t actually my question
If I rephrase, why was the D2 designed with an internal power supply knowing they are inferior, and that a low cost quiet switch PSU were available at a small additional cost which could possibly benefit the end costumer, which in a field that people like to experiment and try new things, would have been welcomed? I appreciate it was built to a price point, and totally accept that, my curiosity is around the decision to do it this way. Is it that, that I have answered my own question in my first post?
I couldn’t imagine why anyone would want to take a soldering out to a D2, but PSU’s, yes definitely having noticed the large benefit from LPS/s/IFI’s Quiet PSU’s to my whole digital setup.
Yes, from the Sbooster instructions for example, its a wire being cut, which is easily repaired if needed. With a UK based product, would this void your warranty? If not, this would be very welcomed by myself to allow me to try an outboard LPS.
I appreciate the D2 was made to a price point,and your LPS is expensive, this isn’t the question I am asking though (again). Im not sure why you are giving me politicians answers! I praise Lumin products, as many do, but its only fair there that criticisms could be posed alongside the praise, do you not feel?
The manufacturing price would have been very similar, if not less to use an outboard PSU I would imagine, therefore allowing the user to make a basic upgrade which could improve the product on a small level without being extortioned to almost triple the expenditure. Therefore, my original curiosity still stands, is it that you just arent willing or prepared to answered that transparently?
I am curious to try an LPS but the D2 is only a few months old. It could be, it makes no audible difference as in the case of my previous RME DAC, that was designed so well, the switching PSU made absolutely no difference to the performance of the product.
The predecessor to Lumin D2 is D1. D1 did have an outboard power supply. D2 is a result of dealers requesting a single box unit, as some users did not like the idea of a dangling external power supply.
The D2 internal power supply is better than the D1 external power supply.
If you’re in UK, that depends on the Lumin UK distributor handling of the repair request.
As for the “quiet” switching PSU, I read some interesting comments about it by John Swenson.
The quiet switching PSU’s are fantastic. One of the most reasonably priced upgrades one can make to parts of their system using switching psus, a network switch being one. I’ fully understand that a company who makes extremely expensive LPS’s would want to discount an effective budget product though, thats part and part of what can be a sometimes ‘toxic’ hifi industry.
Ok, thanks for your thoughts. I can draw my own conclusions from that, being that a 13amp plug is not much bigger than a wallwart psu…so whatever the option, something is going to ‘dangle’. I’m definitely baffled as to why respectable dealers would want a switching PSU inside the actual component, given all the nasties they are known to give off? Sounds crazy to me.
Who is the UK distributer for Lumin? I will get in touch with them about the warranty handling if an LPS was added and report back
I agree Peter.
My Linn Klimax Kontrol preamp and Linn Majik power amps all use switching PSU’s inside (‘Dynamik’), and they sound absolutely fine.
I think there is a lot of BS in the audiophile community about the so-called ‘benefits’ of LPS units.
Rob Watts at Chord is on record at Head-Fi as stating to avoid using LPS with their products, and to stick instead with the supplied external switching units:
Oct 16, 2019 at 11:56 AM
Post #7370 of 7820
Sponsor: Chord Electronics
Joined: Apr 1, 2014
rkt31 said: ↑
My question to rob, as you have been using 12v portable power solution for tt2 and HMS, can you please tell about how low the supply can drop below 12v before tt2 and HMS stop working ? I am asking because 12v is already 3v less than 15v .
Each device has different thresholds. In the case of TT2, the FPGA ADC measures the incoming voltage and if it’s too low will trigger a shutdown - so that pulling the PSU will mean no switch off thumps. If memory serves, I set that to 11v or so. If the supply exceeds 15.5v, then the power high error will trigger, ensuring that the super caps won’t get over-voltage.
For the M scaler the upper range is the same at 15.5v, and the lower value is more like 5v.
Don’t think about using audiophile linear PSUs, they will degrade the SQ and your warranty will be invalidated.
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And yet most Lumin products come with linear psu’s. lol, so working on your/Robs concept, Lumin are ripping people off with LPS’s and the additional cost?
Having owned a Chord Qutest before, and using it with an LPS was a good SQ upgrade, which is probably why Lumin use them on their more expensive modes. I use LPS’s on everything and the results have been extremely favourable. SQ is also subjective, what sounds better to one person, may not to another, for me, almost every component I’ve removed a switching supply from performed better so it’s best to leave it at that regarding SQ.