Amp/Preamp Asylum

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Original Message

That sounds like one serious designed preamp.... appears to be

Posted by dhrab on July 4, 2017 at 05:56:00:
Redemptions is a tremendous motivator ... I got involved in this thread when I felt something was being missed ... I started by reading the manual and realizing that B/H's Wyred was an active not passive preamp and that contributors were treating it as a passive with passive downsides as B/H used the wording of "Passive"

Reading the manual you will come to realize that Wyred poorly used the word "Passive" to actually mean no additional active gain ... can't blame everyone for being confused including B/H because of Wyred's misleading language

All active preamps are Class A with no negative feed back but Wyred took it much further ... they realized that someone may want to use both outputs at the same time and buffered them ... also they realized most modern systems have to much gain anyway and didn't need any additional gain so they made the preamp a "unity gain" type offering no additional gain in the preamp ...this allows the volume control to be turned up higher with less resistance in the circuit and improves transparency .. dynamics and headroom

B/H's STP SE pre comes with Wyred's stage one improvements ... from their site

Stage 1 Upgrade

Our available Stage 1 STP-SE upgrade features our discrete proprietary regulators along with 24 Vishay Z-Foil resistors, four premium inductors, four Schottkey diodes and an upgraded fuse. These enhancements which focus on the power supply and input/output buffer circuits present greater fidelity and definition.

If you noticed in my second post I said the biggest choke point in most preamps is the volume control pot ... well take a look at Wyred's stage 2 upgrade ... from their site

Stage 2 Upgrade

The Stage 2 upgrade, includes all of the above plus an upgraded IEC inlet, 48 Vishay Z-Foil resistors located in the resistor ladder volume control, 16 upgraded high frequency filter capacitors and a green OLED display. Direct attention to the signal path throughout the volume control and filtering circuit yields major enhancements to an already exceptional product.

"48 Vishay Z-Foil resistors located in the resistor ladder volume control"

Yes ... Redemption is a tremendous motivator