None of those preamps are of the same model, nor the same level of engineering specification, of the First Sound preamplifier I'm selling. Those are older models and have only a
single external power supply. Moreover, the last model listed is a passive preamp, so it's not pertinent to the discussion here.
Emmanuel is constantly upgrading his designs and developing new crafting techniques for the main chassis and the external power supplies, the 2023 version of which have been implemented in my preamp.
The preamp I'm selling has not one, but
two external power supplies, one for each channel, L/R, each updated to the latest engineering specifications.
The model I'm selling is the 2023-edition
Presence Deluxe 4.0 MkIII-SI-x2 Special Edition Upgrade using Audio Cap copper capacitors. This model also includes the two of the latest-specification Shunyata Research CCI-X AC noise-reduction (NR) modules per external power supply (and, as mentioned above, there is a separate, external power supply for
each channel) for a total of
four, as well as Shunyata Research wire utilized inside the MCU.
The SI-x2 w/ Special Edition upgrade also includes:
- MOD '23-02 upgrades to the Presence Deluxe 4.0 MkIII-SI-x2 model
- Like a brand- new preamp with new main circuit boards
- Main Control Unit (MCU):
-the tube mounting platform itself was modified and improved
-the main circuit board was modified with new parts and how it is crafted.
- Two External power supplies.
-MED30 v2 installed
-chassis itself was modified
- Crafted using the latest crafting technology (circa 2023 Feb)
- Audio Cap copper capacitors for the the entire audio signal pathway
- LTH92 Ladder type attenuators using Holco/PRP resistors
- 3 chassis unit (1 main chassis; 2 external power supplies)
- 3 year warranty
MSRP is $17,600; will sell for $8500.
So...those older models listed above
are not at the level of engineering specification nor have Emmanuel's latest crafing techniques of the Presence Deluxe 4.0 MkIII-SI-
x2 Special Edition model I am selling.
Cheers and have a nice day.