Luxman's Reference Tube Preamplifier
The heart of any preamplifier is the volume control. If not executed properly, it can cause left/right channel imbalances and introduce subtle but tangible distortions at low volume. For this reason, Luxman created the highly regarded LECUA attenuator system. The CL-1000 refines that concept with LECUTA, the Luxman Electronically Controlled Ultimate Transformer Attenuator.
The volume knob is a 34-step rotary switch that triggers 34 relays, located completely outside the signal path. In turn, the relays activate 34 taps on matching left and right transformers. These transformer taps set the volume in carefully calibrated steps. Because transformer cores can influence sound quality, Luxman engineers selected FineMet® core material from Hitachi Metals, Ltd. This has a unique nanocrystal structure for high saturation flux density, high relative permeability and low core loss. As a result, the CL-1000 delivers uncompromising sound, even at low volume.