Manley Labs MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER guide

OPERATIONAL NOTES

INPUT

GAIN dB

M C 2

MANLEY

STEELHEAD

LOAD

	x100	CAP			x10
		pF
4	5	6		4	5	6
4		6		4		6
3		7	3			7
2		8	2			8
1		9	1			9
0		10		0		10

MC LOAD Z, ohms

0	100	2
0		0
5		0
5		4
5		0
2		0
2

						M	VOLUME
						UTE
							DI
							M
							S
							U
			LOAD				M
	x100		CAP		x10
			pF
4	5	6		4	5	6	LI
							N
3			7	3		7	E
2			8	2		8
1			9	1		9	SLEEP
0		10		0		10	SLEEP

PREPARATION FOR INSTALLATION

Budget a suitable space in which to place the preamplifier, power supply and associated interconnect cable. This space should be free of strong external magnetic and RF fields, and reasonably removed from strong loudspeaker-generated acoustical fields. This space should also be free of excessive heat or dust and large enough to permit easy flow of cool air to the top, bottom and sides of the preamp and power supply.

Make sure the power supply’s mains voltage selector switch is set to match the local line voltage, and the wire link is present between the preamp’s green CHASSIS and black CIRCUIT ground mini binding posts on the rear panel.

Try to position the power supply away from any interconnect cables which may be carrying audio signals.

BEFORE POWER-UP

Once placed, join the power supply cable to the pre-amplifier via the large16-pin circular connector. The 16-pin connectors are keyed and can only be mated when both halves are lined up correctly. Check and make sure the power supply is switched off, then attach the grounded IEC power cable jack to the IEC plug. Keep the power off until all other system connections are completed.

Proceed by connecting the input and output cabling to the signal sources and loads as desired. Tie any separate turntable or tonearm ground lead to the gold CHASSIS ground binding

Set the GAIN dB control to 55 dB and VOLUME control to about 9 o’clock. Choose the

MMor an MC input, as necessary, with the INPUT control. Place the LOAD Z switch to a value at or near that recommended by the cartridge manufacturer. Adjust the LOAD CAP switches to a value at or near that recommended by the cartridge manufacturer less any interconnect cable capacitance. Select and clean, if necessary, your favorite gramophone record....

Plug the power cable in and place the power supply’s mains power switch in the on () position. The STANDBY switch should glow. Push the STANDBY switch. The STANDBY switch will go dark, selected INPUT and GAIN blue LED’s will illuminate, the MUTE switch lamp will start flashing and the power supply pilot LED and the MANLEY STEELHEAD badge will light up.

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MM/MC GRAMOPHONE CARTRIDGE PREAMPLIFIER specifications

The Manley Labs MM/MC Gramophone Cartridge Preamplifier stands as a remarkable piece of audio equipment, designed to elevate the listening experience for vinyl enthusiasts and audiophiles alike. Renowned for their expertise in high-fidelity audio, Manley Labs has crafted this preamplifier to deliver exceptional sound quality and versatile performance for both Moving Magnet (MM) and Moving Coil (MC) cartridges.

One of the standout features of the MM/MC Gramophone Cartridge Preamplifier is its high-quality analog signal processing. The preamp employs vacuum tube technology, incorporating premium 12AX7 and 12AT7 tubes to provide a warm, rich sound that many listeners treasure. The implementation of soft and natural tube warmth contributes to an organic sound, preserving the authenticity of vinyl recordings while enhancing detail and nuance.

This preamplifier offers adjustable gain settings, allowing users to optimize performance according to their specific cartridge choice, be it MM or MC. With the capability to accommodate various cartridge output levels, the Manley Labs preamp ensures maximum adaptability. Users can switch between settings easily, ensuring compatibility with a wide range of turntables and cartridges.

Additionally, the MM/MC Gramophone Cartridge Preamplifier features high-quality components throughout its design. Its circuit topology is engineered to minimize noise and distortion, ensuring a clean signal path. The unit is also equipped with a low-frequency filter, which can be utilized to eliminate unwanted subsonic frequencies that could muddy the audio experience.

Another notable aspect of this preamp is its robust build quality. Encased in a sleek metal chassis, it combines aesthetics with durability, ensuring longevity while adding a stylish touch to any audio setup. The carefully designed layout not only contributes to the preamp’s performance but also showcases Manley Labs’ commitment to craftsmanship.

In conclusion, the Manley Labs MM/MC Gramophone Cartridge Preamplifier is a premium choice for vinyl lovers seeking a high-performance preamp that combines vintage warmth with modern adaptability. Its advanced features, high-quality components, and user-friendly design make it an essential addition for anyone looking to enhance their vinyl listening experience profoundly. With this preamplifier, Manley Labs continues to uphold its reputation for excellence in high-fidelity audio.