CL-125/2 Dual Mic-Line Preamplifier

€ 1,350

CL- 125/2 mic preamplifier has been conceived to offer to the professional user a unit that combines high reliability, rugged design, audio quality, versatility and ease of use. CL-125/2 is perfect for recording every kind of music from classic, pop/rock, electronic and in all the situations where maximum sound quality and special attention to dynamic range and signal to noise ratio is needed.

The CL-125/2 technical specifications shows that it is the perfect audio system for actual digital recording 24bit/192kHz environments where superior performance is required. CL-125/2 is based on the use of the latest circuit topologies, characterized by very low distortion, ultra-low noise and very wide frequency response. The amplifier architecture is based on two high dynamic range gain stages in order to avoid any saturation.

Even if the input stage of the CL-125/2 do not saturate up to +24 dBu, a special protection circuit limits the input level at +20 dBu in order to prevent any damage. The extended input dynamic range avoids the necessity of the input pad.

Moreover a special circuit allows the connection of microphones even if the unit is turned on with the Phantom Power activated. CL-125/2 is dedicated (due to his absolute sonic level quality) to high professional vocal recordings, classical instruments, high dynamic range instruments such as drums and percussions.

Number of Channels: 2
Power Supply Universal switching regulator
Operating Voltage 100V ~ 240V ±10%, 50/60 Hz.
Power Consumption 10 W
Microphone Input Electronically Balanced
Microphone Gain 70 dB range with a continuous unique control,
Max input level +20 dBu (internal limited to +12 dBu).
Line Input Unbalanced, Impedance 47 KΩ.
Line Gain 30 dB range with a continuous potentiometer control,
Level 0/-30 dBu. Max +23 dBu.
Bandwidth 5 - 200.000 Hz -1dB, perfect square wave up to 20 KHz
Distortion + Noise <0.003% ( typical 0.001 %).
Low Cut Filter 80 Hz. 12 dB / Oct.
High Cut Filter 8 KHz. 12 dB / Oct.
Output Electronically Balanced,
Level +4 dBu. Max +28 dBu.
Front Panel Controls 48V Phantom Power button,
Lo-Cut button,
Hi-Cut button,
Phase Reverse button.
Front Panel Input Connectors 1/4” TRS jack
Front Panel Indicators Level Indicator 10-LED Bargraph (7x green, 3x red). 1.5 dB step,
4x red LEDs (48V Phantom Power, Hi-Cut, Lo-Cut, Phase).
Rear Panel Controls BAL/UNBAL switch on every channel,
Power on/off switch.
Rear Panel Input Connectors Balanced XLR female.
Rear Panel Output Connectors Balanced XLR male.
AC mains IEC C13 16 A connector, AC mains cord with IEC Schuko 16A.
Rear Panel Main Switch Power On/Off switch.
Construction Half rack metal box
Dimensions W 200 mm / 7.87”, H 40 mm / 1.57”, D 140 mm / 5.51”.
Weight 1.4 kg.

    CL-125/2 Key-Technologies


    Large Bandwidth (LB) means a very fast transient response able to represent the original sound with the maximum temporal resolution. LB is required to improve the perception of a “real sound” and to represent the details of the original sound.

    Large bandwidth plus very low total harmonic distortion means a perfect square wave reproduction.

    Ultra Low Noise (ULN) active and passive components and ULN design techniques. This requirement is especially important when the audio bandwidth is large as in the case of ARREL Audio products.

    High Dynamic Range (HDR) means that the saturation probability of the output stages is very low. This is obtained by using special rail to rail circuits and by increasing the power supply voltage of the analog circuits.

    Electromechanical tolerance means that electromechanical components are doubled in every situation in which maximum reliability it is important due to a frequent use (switches, push buttons, potentiometers).

    Through Hole technology means the maximum reliability in terms of thermal and mechanical stresses especially for connectors and electromechanical components.

    In the ARREL preamplifiers, special input circuits and a high output dynamic range output stage guarantees no saturation, consequently the input pad is not required.