DACT Fine 0.5dB Stepped Attenuator Mono

Description

This DACT CT2 attenuator is an individual channel fine adjustment control with 0.5dB level change between each step. It is ideal for when fine control of levels is required or for channel matching either in stereo of for surround sound systems. It is equally suited for audiophile applications and for professional applications. The series resistor networks consist of 23 non-inductive, low noise, SMD metal film resistors. The layout of the PC board and the choice of SMD resistors have reduced the signal path to a minimum length (typical five times shorter than conventional stepped attenuator designs with leaded resistors). The PCB design combined with the special resistors also account for the very low series inductance and the very low stray capacitance. The result is a bandwidth beyond even the most demanding audiophiles requirements.

There has been special care taken to ensure the durability of the CT2. Therefore, all contacts and PCB traces are gold plated to prevent any corrosion. As a result, the CT2 will maintain its specifications after long time of use even in hot and humid environments. The rotary switch itself is a gold plated high precision switch manufactured in Switzerland.

DACT CT2 rear view showing SMD resistors.

Features

• Low noise, non-inductive, metal film SMD resistor network.
• Compact design.
• Entire signal path gold plated.
• Shorter signal path than conventional attenuators with leaded resistors.
• Reduced inductance and stray capacitance.
• Improved sonic quality.
• Gold plated contacts and connectors on DACT audio switches.
• Improved accuracy - 0.05 dB tracking and 0.05 dB attenuation accuracy.
• Improved reliability.
• Increased bandwidth.
• Reduced distortion, less than 0.0001%.

Typical Applications

• Passive pre-amplifier (volume control) fine level adjustment and matching.
• Fine volume adjustment in audiophile amplifiers.
• Fine volume control in professional audio and A/V equipment.
• Upgrading hi-fi and A/V audio equipment.
• Reference audio attenuator.
• Test equipment attenuator.

Specifications

• 0.5dB level change with each step
• Number of steps: 24
• Bandwidth (10 kOhm): 50 MHz
• Attenuation accuracy: +/-0.05 dB
• THD: 0.0001 %
• Mechanical life, min. 25,000 cycles