Manley Labs 300B owner manual Specifications, Slo-Blo

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SPECIFICATIONS

Vacuum Tubes:

 

2 x 300B, 2 x 6SL7GT

 

 

2 x 5AR4, 2 x OD3

Lamp type

 

1/4 X 1 1/4, 12 volt, .15 amp

Fuse type

120VAC operation:

MDL2, 2 AMP / 250 Volt

 

220VAC operation:

MDL1, 1 AMP / 250 Volt

 

 

SLO-BLO

Gain

 

18 dB at max Volume

 

 

1 volt in = 8 volts out

Noise Floor

 

typically -70 dB 1Hz - 100 kHz

Signal to noise

 

typically 105 dB A WGT 20-20K

Frequency Response

 

5 Hz to 50 kHz @ +/- 1 dB

Distortion

 

THD+N = -80 dB (.01 %)

zero "crossover" distortion, mostly 2nd harmonic, unmeasurable after 5th

Volume control "Left / right tracking"

1/10 dB

Volume control "steps"

-∞,-70,-60,-50,-46, -44,-42,-40,-38,-36,-34, etc, -12,-10, -6, 0

Input Impedance

 

100 Kohm

Output Impedance

 

100 ohms

Output Power (100 ohm Headphones)

1W (10 V RMS) (28 V P-P)

Output Power (600 ohm Headphones)

1W ( 25 V RMS) (70 V P-P)

Power Consumption

 

170 Watts (1.4 A @ 120VAC)

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Contents Manley Contents Introduction Thank YOUMains Connections Brown LiveConnecting Your Preamplifier AB C DEF TOP View C D E F G H I J Rear PanelSwitching on Operational NotesSpecifications SLO-BLOWarranty Warrantyregistration
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300B specifications

Manley Labs 300B is a high-fidelity tube amplifier that has gained a reputation among audiophiles for its exceptional sound quality and craftsmanship. This amplifier is named after its use of the 300B vacuum tube, a component famous for producing a warm, rich sound that is both detailed and engaging. The Manley Labs 300B amplifier has become a reference point for those who appreciate the artistic qualities of sound reproduction.

One of the key features of the Manley Labs 300B is its fully balanced design, which helps to minimize noise and distortion. This design approach allows for greater dynamic range and clarity in the audio signal. The use of premium components throughout the circuit further enhances performance, ensuring that every note is rendered accurately and with depth.

In terms of power, the Manley Labs 300B delivers 8 watts per channel in a class A operation, which is a hallmark of high-end audio equipment. While this may seem modest by modern standards, the quality of sound produced is often more important than sheer wattage. The 300B’s output stage offers a creamy and dynamic sound, excelling particularly with vocal and instrumental music, where it conveys subtle details with remarkable fidelity.

Another significant aspect of this amplifier is its flexibility in terms of speaker compatibility. It is designed to drive a variety of speakers, making it a versatile choice for different listening environments. The Manley 300B supports both 4 and 8-ohm output impedance settings, allowing users to match it to their favorite loudspeakers for optimal performance.

Additionally, the amplifier's construction is noteworthy. It features a robust chassis that not only reduces resonance but also adds to the overall durability of the unit. The hand-built nature of the Manley Labs 300B ensures that each piece is crafted with meticulous attention to detail and quality.

The Manley Labs 300B also comes equipped with a rich array of features, including an input selector, volume control, and high-quality binding posts for speaker connections. These components are not just functional; they also reflect Manley’s commitment to providing a user-friendly and high-performance experience.

In summary, the Manley Labs 300B is a sophisticated and beautifully crafted tube amplifier that offers a level of sonic performance that is hard to match. Its combination of high-quality components, thoughtful design, and powerful performance make it a standout choice for audiophiles seeking a true musical experience. Whether used in a dedicated listening room or as part of a larger audio setup, the Manley Labs 300B delivers a sound that is both engaging and lifelike.