Description

Overview of the Graham Langley Inherit Cartridge

The Graham Langley Inherit Cartridge is a top-tier differential preamp featuring paired transistors and constant current sources. Digitally controlled to isolate the analog signal path within the metal cartridge, it ensures minimal interference from the linear power supply. This design achieves optimized values for common mode rejection and output balancing, making it perfect for users seeking uncompromising sound pickup.

Key Features

• Premium Differential Preamp: Composed of paired transistors and constant current sources.
• Digital Control: Isolates the analog signal path for minimal interference.
• Manual Calibration: Ensures optimized values for common mode rejection and output balancing.
• Low Resistive Ratios: Provides an optimal Equivalent Input Noise (EIN).

Technical Specifications

Key Measurements

All measurements are made with an Audio Precision device, with an input impedance of 100K Ohms.

• PAD: -20dB
• Input Impedance: 5K Ohms
• EIN (150 Ohms source at gain max – 22/22Khz):
  • Unweighted: -127.7 dBu
  • Weighted A: -130.7 dBu
• THD + N: 0.04%

Gain Steps

The cartridge offers precise gain steps with a variation of +/-1dB:

1. 16dB
2. 20dB
3. 24dB
4. 28dB
5. 32dB
6. 36dB
7. 40dB
8. 44dB
9. 48dB
10. 52dB
11. 56dB
12. 60dB

Gain VS Frequency

The gain versus frequency settings are optimized for various applications, ensuring consistent performance across different frequencies.

THD + N VS Frequency

The cartridge maintains minimal Total Harmonic Distortion plus Noise (THD + N) across various frequencies, providing a clean and distortion-free sound.

Phase

The cartridge ensures phase coherence, delivering accurate and clear sound reproduction.

Designer’s Overview by Graham Langley

Graham Langley shares his insights on the Inherit Cartridge:

“When I first discovered the GC Audio “Inherit” system, I was impressed by the innovative concept of interchangeable microphone amplifier cartridges, allowing customers the flexibility and freedom of choice to enhance their creativity. The thought that had gone into the design and the build quality of the product also appealed to me. I was therefore honoured when invited to contribute a “Langley” microphone amplifier cartridge design.

I designed a custom preamp to completely match the capabilities of the Inherit System. The circuit is reminiscent of the topology that I used in Amek console microphone amplifier designs in the 1970s and 80s but with significant improvements, particularly in noise performance. This cartridge is intended to provide a clean, transparent sound over the full audio frequency spectrum. I hope you enjoy using this addition to your “Inherit” cartridge collection.”

Graham Langley

Why Choose the Graham Langley Inherit Cartridge?

The Graham Langley Inherit Cartridge is more than just a preamp; it’s a testament to the blend of classic design and modern technology. With its premium differential preamp, digital control, and manual calibration, it delivers uncompromising sound quality and transparency. Whether you’re working on vocals, instruments, or any other audio source, this cartridge will bring a rich, clear, and powerful sound to your recordings.

The GC Audio – Graham Langley Inherit Cartridge is an essential tool for sound engineers seeking the best in sound pickup. Its innovative design, meticulous calibration, and superior performance make it a standout choice for any audio professional.