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Load impedances do not make much difference to the character of the output. The intrinsic
output of the impedance of the preamp is passive in nature, and no load will create
nonlinearity.
The internal power supply for the Aleph P consists of a toroidal power transformer delivering
an unregulated 85 volts which actively regulated before feeding passive filtering before
powering the constant current sources which bias the gain stages. The power supply noise
reaching the circuit is on the order of a microvolt, and is differentially rejected at the output in
a balanced system. The relays and control systems are regulated independently.
The output of the preamplifier is guarded by muting relays which delay connection during
turn-on and shut off the output when insufficient power supply is available to maintain
regulation. The preamplifier is designed to run constantly, and will exhibit optimum
performance within an hour of turn-on.
The chassis of the Aleph p is made entirely of machined aluminum. We mill and engrave the
chassis components from solid aluminum material on computer controlled vertical milling
machines. No sheet metal is employed.
The Aleph P is warranted by Pass Laboratories to meet performance specifications for 3
years from date of manufacture. During that time, Pass Laboratories will provide free labor
and parts at the manufacturing site. The warranty does not include damage due to misuse
or abuse or modified products and also does not include consequential damage.
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