Hybrid Passive AttenuatorCM-1000

The hybrid passive attenuator for which the reformational volume control mechanism has been evolutionally-advanced and which can educe music reality and even an artist's passion

Product Concept

We released the first class hybrid passive attenuator "Control Meister, CM-1" different from conventional pre-amplifiers and not having active circuits.The ideal volume control circuit has been developed by adding a new idea against the volume control mechanism to be a key item of audio-play and its patent has been obtained.We will release "Control Meister, CM-1000" which realizes precise, bundless sound field reproduction fresher than conventional models by re-examining the parts of volume control circuit used in CM-1 such as the core size and thickness of laminated core.

Main feature

Reformation for ATT transformer, the heart of Hybrid gain control circuit to be ideal volume control circuit

The volume control circuit in this product actualizes the required fine volume resolution (46 levels) in the conditions of high input impedance, low output-impedance and adopting no active devices. This product is in the different class from conventional passive attenuators; you can enjoy your music without becoming sterile sound because treble sound does not deteriorate even if a 10m or more RCA cable is connected, and because power spreading music is kept even if the volume is downed.

For CM-1000, the ATT transformer which is the heart of parts in volume control circuit to be used in CM-1, such as its core size and thickness of laminated core has been re-examined and re-designed, so that the perfection level of hybrid gain control circuit is further increased.

By attaching the copper plating steel to the aluminum chassis, further ensuring of Resonance-free, vibration-free and interference-free chassis

High purity of signal is maintained without passing through unnecessary contacts because only functions required as a control center have been selected.

3-dimensional ideal arrangement of parts is realized by connecting a wire in minimal distance by using hands, in the condition that the printed wiring is not used for the circuits completely.

Luxury texture

The rotary knob which has been produced by high accuracy machining and the switches of which even operational feeling has been examined are combined, so that the luxury operational feeling which only a genuine article possesses is established.

The 8mm-thick front panel produced by machining and 5mm-thick top plate are finished to the dignity having high universality and which provides you the pleasure of owner.
The input/output terminals made by WBT Company which are acknowledged by high quality and high-quality sound are adopted.

Product Specification

Product Hybrid passive attenuator
Input impedance 47k ohm or more
Channel separation 100dB or more (20Hz to 20kHz)
Frequency response 10Hz to 70kHz (+0, -3dB)
Output impedance 250 ohm or less
Input/Output terminals Terminals made by WBT Company
Max.dimensions (mm) 310 (width) x 86 (height) x 245 (depth)
Mass 5 kg