ALPHA Tube Preamplifiers

Series A-100

A 100L Line:
Line Tube Preamplifier

• Four line level inputs
• Two outputs

A 100LP Line + Phono:
Line Tube Preamplifier with phono stage

• Three line level inputs and one mm phono input
• Two output sets

The phono stage is into the same box at separate board and with it’s own final filters of power supply.
The phono board carries “second level” boards for the in factory RIAA fine adjustment.

A 100LC Line + Cross:
Line Tube Preamplifier plus a two way electronic cross-over.

The preamplifier part of this unit may be used at any system.
The electronic crossover part is especially designed to be used for bi-amplification of a system having Analysis loudspeakers.

• Four inputs
• One conventional output
• Two additional outputs, to drive the separate amplifiers connected to your Analysis loudspeakers
    ° The first, is internally pre-adjusted to drive the high frequency (for the tweeter) amplifier
    ° The second, to drive the low frequency (for the woofer) amplifier

The electronic cross-over's output levels are able to be adjusted individually.
Thus, amplifiers of different input sensitivity may be used for the high and the low branches. (i.e. In bi-amplification it is sometimes desirable to use a tube amp for the highs and solid state for the lows).
Once the relative output levels are set, the central volume contron, masters all outputs.

"The Alpha 100L is among the best audio devices I ever handled....."

---- From the "Lefteris Xenos" review at the "Sound and Vision" magazine, June 2010