Seventh Circle Audio Neve N72 1272 1073, A12 API 512, SC99 HARDY, C84, T15

GREAT Preamp setup--5 modules with 5 DIFFERENT FLAVORS loaded in an 8 module chassis! This Seventh Circle Audio Ch-01 Chassis filled with (1) N72, (1) A12, (1) SC99, (1) C84 and (1) T15 mic preamps one of each kit available.

Each preamp model is a very accurate reproduction of their vintage inspirations from Neve and API, both in audio characteristics and design, and all of them sound fantastic! The N72's give you a smooth and rich characteristic, while the A12's have a more aggressive midrange.

The SC99, C84, and T15's are more natural and clean in sound. All feature stepped Grayhill switches for repeatable gain settings and the chassis is heavy gauge col rolled steel and is VERY rugged. Each module has: Gain, Trim, Phase reverse, and Phantom Power.

The chassis is included and does show some signs of wear. The N72 has become especially popular with digital recordists, since many feel it provides a certain warmth and color that can greatly benefit the hyper-accurate quality of digital recording. The basic circuitry of the N72 is essentially the same as that of the BA183 modules used in the 1272, 1073, and other Neve modules, and from a sonic perspective is virtually indistinguishable from an original Neve.

High Gain The N72 delivers up to 70dB of gain including the voltage step-up provided by the transformers. This is more than enough gain for most applications, especially with modern high-output condenser microphones.

Stepped Gain Control A 12 position Grayhill switch provides accurate and repeatable gain settings in 5dB steps from 15dB to 70dB. Gain Trim High quality Bourns conductive plastic potentiometer can be wired as a full fader or gain trim control, allowing fine adjustment of gain between steps. Phase Reverse Inverts the signal phase. Phantom Switch Slow-rise phantom power minimizes pops and thumps. Neutrik Connectors High quality PC mount connectors eliminate cabling and ease assembly. Carnhill Transformers The N72 uses Carnhill input and output transformers. These UK manufactured parts are direct descendants of the original Marinair and St. Ives transformers and are the most convincing replacements available. Flexible Power Supply On-board voltage regulator can accommodate power supplies from +27DC to +35VDC.

Local regulation also keeps inter-channel crosstalk extremely low when multiple preamps share the same power supply. The A12 is a simple, single stage preamp roughly based on classic American designs of the early'70s. Built with the suggested transformers and op-amp, the result is an amplifier with an aggressive midrange and pronounced transformer coloration. The A12 sounds fantastic with rock drums and electric guitars, but is versatile enough to be used with a wide variety of source material and microphone combinations. High Gain The A12 can provide 70dB of gain, including the voltage step-up provided by the transformers.

Gain Trim Since 5dB is often too big a gain step, the A12 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. CineMag Input Transformer The A12 uses a CineMag CMMI-8-PCA to couple the microphone signal to the amplifier. Manufactured to exacting standards, this transformer gives an 18 dB voltage step-up, has excellent specifications, and provides distinctive sonic qualities that compare very favorably to vintage units. CineMag Output Transformer The steel-core CMOQ-2S gives the A12 an aggressive character virtually indistinguishable from certain vintage amplifiers.

Flexible Power Supply On-board voltage regulators can accommodate power supplies from +/-27VDC up to +/-35VDC. Local regulators keep inter-channel crosstalk extremely low when multiple preamps share the same power supply.

Built-in SC25 Op-Amp The A12 has a high-performance discrete op-amp laid out directly on the main circuit board. The circuit is exactly the same as our very popular SC25 amplifier module. The SC99 is a 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, but the slightest amount of euphoric transformer coloration is desired. The C84 is a transformerless microphone preamplifier based on the "Double Balanced" circuit first published by Graham John Cohen and since used by many notable manufacturers.

The C84 is superb on acoustic instruments, percussion, and any source that needs to be captured as accurately as possible. The T15 is a transformerless microphone preamplifier designed around the excellent THAT Corporation 1512 and 1646 ICs. These state-of-the-art chips enable the performance of the T15 to approach that of sophisticated discrete and hybrid designs (such as the C84) while using far fewer components. While it does not have the same headroom and output drive capability as the C84, the T15 has similar noise and distortion specifications and excels in the same applications.

High Gain The T15 can provide 70dB of gain, more than enough gain for most applications, especially with modern high-output condenser microphones. Gain Trim Since 5dB is often too big a gain step, the T15 also has a gain trim control which provides up to 6dB of cut at any gain setting.

This control can also be configured as a full fader. Dual DC Servos Similar to the C84, the T15 employs two DC servo circuits. Flexible Power Supply On-board voltage regulators can accommodate power supplies from +/-15VDC up to +/-35VDC, allowing the use of op-amps with +/-24VDC requirements.

The item "Seventh Circle Audio Neve N72 1272 1073, A12 API 512, SC99 HARDY, C84, T15" is in sale since Wednesday, June 16, 2021. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "scopehead" and is located in Chicago, Illinois.

This item can be shipped to United States.

• Number of Channels: 5
• Model: Seventh Circle
• Modified Item: No
• Country/Region of Manufacture: United States
• Type: Microphone Preamp
• Features: Phantom Power
• Brand: Seventh Circle Audio