Yes. Mine is still going strong since 2013. Mostly, it is attached to my PC as an external DAC, but is sometimes used when mountain biking. Battery life is much the same as when new, which is surprising.

I think that this may be as much to do with the human factor in the audio world.  I have experienced this personally with some tubes that others say sound different, yet I cannot hear the same difference.   It is all so subjective; we all hear things so differently.  I think that sometimes when...

I found the Mullard M8161  (CV4015 version) to be very smooth in the high registers.  I can't compare them to your Tung-sol 6AH6, as I have yet to try them.   The M8161 are readily and inexpensively available as NOS.

If you like a more mellow top-end, have you tried some of the Mullard tubes?      I have not noticed any clicks / pops since installing the MUSES02 in my LD1+  Maybe what you are hearing is from the source?  Those MUSES are very revealing.

Yes, the new pot will need soldering to the board, if the contact spacing is correct, or wired if it is not.  Actually, the standard pot on the LD1+ is an ALPS model, but an older, less advanced design.  Changing the pot did make a noticeable difference, but I would not say a huge difference. ...

Michael V:   How did you get the Burson op-amp into the LD case?    I have used some of these in my home made DACs and they are quite tall.  Sound good though.   How is the sound with the Burson op-amp and the 6ZH1P-EV tubes?

Vbe mod: connected a 0.1uF cap between the bases of each output transistor pair, to bypass the Vbe multipliers.  This removed the transient at around 10KHz, so treble a bit smoother, especially at higher volumes.   Upgraded all main caps to higher quality versions, but kept the values the...

Very nice mods!   How do they sound?

Unlike tubes and other discrete components, there's so little physical material in op-amps that burn-in is not really a factor.   What tubes are you currently listening with?  Currently, I am listening with the MUSES02 op-amp and 6ZH1P-EV tubes.  No hardness of vocals, Wonderfully open and...

No.  It does not matter the architecture of the circuit.  In all tube amps, the choice of matched vs unmatched is always a matter of preference.  Some will swear they hear a difference, wile some will swear otherwise.   Noticeable differences are more likely if the tubes were manufactured in a...

There may well be fake op-amps out there; especially the more expensive ones.   Best to purchase from specialist electronic suppliers to avoid the risk.   I purchased mine from Mouser, but they are available from Farnell, Digikey etc. also.  Companies like these, source components direct from...

  I agree that, for the most part, matched pairs are a waste of money.  It is unlikely that non-matched pairs will show any noticeable disparity in performance to the human ear, so long as they are produced around the same time and in the same factory process.   Fear, uncertainty and doubt...

The LD1+ requires either a dual channel o-amp, or two single channel op-amps with a suitable DIP-8 adapter.  It is sometimes possible to buy 2x single channel op-amps already soldered to an adapter, allowing us to try op-amps that are not available as dual channel.   Some good info here...

Hi,   Linear in this context, refers to the manufacturer, Linear Technology.  Hence LT at the begining of the part number.   While I have no personal experience of the LT1364, It is discussed here .   According to the poster, it is on the neutral side, as opposed to the warmish OPA2107.

Hi,   I have some of these Burson op-amps, in both mono and dual form.  These Burson (and other makes) discreet amps are far too big to fit into the LD1+ case, unless you plan to do some case mods to accommodate them.   In my view, it is not worth the work involved to fit one into an LD1+ in...