Connecting Your Amplifier

Setting up your amplifiers is rather easy.

1.Connect all source components (turntable, CD, Tuner, Tape DAT, etc.) to your preamplifier.

2.Connect the interconnects from the output of the preamplifier or switching center to the RCA input on the top rear of the amplifiers.

3.Connect the hot or "+" speaker cable to the red binding post and the common or "-" speaker cable to the black binding post (See diagarm 2). Ensure that the other end of the cable is connected correctly to the speaker. Tighten the binding posts by hand.

4.Ensure that the "mains" switch on the rear mains input module is in the "off" or "0" position. If the 300Bs are not inserted - do it now - the instructions are on page 4.

5.Turn on Preamplifier and any source components you plan to use.

6.Plug Amplifiers into wall outlets.

7.Set both amps up at the same settings. A good place to start is both amps set to S / E 11 WATTS and 3 dB of FEEDBACK.

8.Switch the mains power switch to the ON or "1" position and allow the amplifier a minute or so to 'warm up'. The glowing panel badge and glowing tube filaments will indicate that the amplifier is on.

9.Turn up the volume on the preamp and enjoy. If something is "humming" don't panic. All you need to do is use a "3 pin to 2 pin AC adapter" or "cheater". If you don't have one they are available at most hardware stores for about a dollar. Usually one amp will need it but sometimes both. This is because a ground loop exists in the system. Too many grounds - You should only have one.

10.Now, while music is playing, try switching to PUSH / PULL. The differ- ence may or may not be subtle. Choose the mode you like best with this music. Turn the FEEDBACK switch to 10. The volume has become quieter so compensate for the difference at the preamp. Listen a bit until you are used to this, then turn down the volume and turn back the FEEDBACK to 0. Adjust the preamp for the same volume as the previous test. Now, you should have a reasonable opinion of the effects of the FEEDBACK. You can turn this control step by step to the position that best matches your speakers and tastes. We suggest also experimenting with speaker placement now that the "system" has changed. Another very important area for experimentation is acoustic treatment. All too often a good system will sound mediocre due to surface treatment compromises. Usually a mix of a little broadband absorbtion and diffusion is a major improvement. Carpet and other thin treatments only absorb highs and can "unbalance" a system.

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.