SCA J99 Microphone Preamp Kit ORDER THIS KIT Mail A Link To This Page To A Friend!

The SCA J99 is a uniquely flexible, high-gain, low-noise, low-distortion microphone preamplifier, based on the classic Jensen Twin Servo design. This is a great preamp to use when a neutral sonic character is required, and the objective is to capture the sound of the performance, not the preamp.

Features High Gain   The J99 can provide 70dB of gain, not including the voltage step-up provided by the input transformer. Jumpered for a 1:5 ratio, the maximum gain available is almost 84dB. Low Noise   With an EIN approaching -130dB, the J99 is quiet enough to use in virtually any recording application, especially with low-output ribbon mics. DC Servo Design   The J99 has a DC servo for each op-amp, and uses no capacitors in the signal path. Stepped Gain Control   A 12 position Grayhill switch provides accurate and repeatable gain settings in 5dB steps from 15dB to 70dB. Gain Trim   Since 5dB is often too big a gain step, the J99 also has a gain trim control, which provides up to 6dB of cut at any gain setting. This allows very fine adjustment of gain between steps. Phase Reverse   Inverts the signal phase. Phantom Switch   Switches 48V phantom power on or off. Neutrik Connectors   High quality PC mount connectors eliminate cabling and ease assembly. Lundahl Input Transformer   The J99 uses a Lundahl 1538XL to couple the microphone signal to the amplifier. This is the same transformer used in several other well-known preamps, and it provides excellent performance at an economical price. CineMag Output Transformer   The output transformer, a CineMag CMOB-2H, provides a balanced, floating output with extremely low distortion and wide bandwidth. Flexible Power Supply   Since the voltage regulators are on-board, the J99 can accommodate power supplies from +/-15VDC up to +/-35VDC, regulated or not, and can accommodate op-amps with +/-24VDC requirements. The on-board regulators also keep inter-channel crosstalk extremely low when multiple pres share the same power supply. 2520 Compatible   The J99 will work with a number of discrete op-amps from manufacturers such as API, Millennia, Forssell, Old School Audio, and John Hardy. High qualtiy IC amplifiers such as the AD797 and OPA627 can also be used when mounted on a suitable adapter, and can rival the discrete types when extreme headroom is not required.

Back To Home Page

Back Up To The Top

Web Page Design Is Copyrighted ©1999 Through By Barry Rudolph