Operational Notes

SWITCHING ON -- SOFT START

The MANLEY 500/200 is equipped with a SOFT-START circuit which lessens the initial stress the amplifier takes upon turn-on. We recommend that you use this soft start facility whenever you turn the amplifier on and especially when cold.

1.Ensure that the "mains" switch on the front panel is in the "off" or "0" position and the OPERATE / STANDBY switch is in the STANDBY mode.

2.Turn on preamplifiers and all source components you plan to use and let them warm up for a minute.

3.Switch the square mains power switch to the ON position and allow the amplifier a minute or so to 'warm up'. The blinking LED will indicate that the amplifier is in STANDBY mode.

4.Engage the soft-start swich to the OPERATE position. The blinking standby LED will extin- guish.

5.Turn up the volume and enjoy.

THE EVER-WARM MODE

After your listening session, if you wish to leave the amplifier in the energy-saving and 'EVER-WARM' STANDBY mode, engage the OPERATE/STANDBY switch to the STANDBY position. The standby blinking LED will remind you that the amplifier is in STANDBY mode. The amplifier will draw only 400mA (30 watts @120VAC) from the mains outlet-- certainly an energy saving way to keep your amplifiers always ready for a listening session!

TRIODE / TETRODE OPERATION:

With the TRIODE / TETRODE switch, the amplifier may be set for TRIODE or TETRODE operation. When the switch is in the lower position, the amplifier is in TETRODE mode which will produce well over 440 watts. When the switch is in the upper position, the amplifier is in TRIODE mode which will produce half the power of TETRODE operation but as fans of triodes know, nothing can match that sweet seductive sound of triodes! For some more demanding energetic music, large rooms, or for power hungry inefficient loadspeakers, you might find you will need the extra power of tetrode operation. Other times and other situations will find you very well satisfied with the triode mode. One major rule applies for switching between triode and tetrode:

THE AMPLIFIER MUST BE TURNED OFF OR IN STANDBY MODE BEFORE SWITCHING

BETWEEN TRIODE AND TETRODE!!!!

Follow turn on SOFT START procedure above when re-powering up the unit.

FEEDBACK & SLOPE CONTROLS

The FEEDBACK control varies the global feedback resistor of the amplifier in 2dB steps. This will change the gain and slew rate of the amplifier. The SLOPE control varies the feedback 'slope' capacitor value which changes the amplifier's intended roll-off points at supersonic frequencies. The best way to take advantage of these controls is to let your ears decide which combination works best for your system, speakers, and taste. Feel free to experiment with different settings to custom-tailor the sound to suit.

TUBE LIFE

You should expect extended life from the tubes in your MANLEY 500/200 if you adhere to the procedures described above and check your bias at least once every 2-3 months. We stock all the tubes in these amplifiers should you ever need replacements (and at very reasonable prices too!)

FUSES

The fuses used in your amplifier are standard 1/4" x 1 1/4" SLO-BLO types. The correctly rated fuse has been installed at the factory for your country's voltage. If replacing a fuse, always unplug the amplifier's power cord from the wall outlet and always use the exact same type and ampere rating fuse as the one you are replacing. Failure to do so will void your warranty and can be a dangerous fire hazard. NEVER replace a fuse with thick wire, tin foil, gum wrappers, or anything else other than the correct fuse!

500 / 200 WATT MONOBLOCK AMPLIFIER specifications

The Manley Labs 500/200 Watt Monoblock Amplifier is a remarkable piece of audio engineering, delivering power, precision, and a signature warmth that audiophiles have come to expect from this esteemed manufacturer. Designed for both studio and home listening environments, this amplifier stands out for its impressive sound quality and robust performance.

One of the main features of the Manley Labs Monoblock Amplifier is its high-power output. With 500 watts into a 4 ohm load and 200 watts into an 8 ohm load, it can drive even the most demanding loudspeakers without breaking a sweat. This level of power ensures dynamic range and headroom, allowing the amplifier to handle complex musical passages and transients with ease. This makes it ideal for users who crave a powerful and engaging listening experience.

The design of the 500/200 Monoblock incorporates Manley’s signature push-pull all-tube amplification topology. This results in a rich harmonic structure that adds warmth and depth to the sound. The use of high-quality, carefully selected vacuum tubes contributes to the amplifier’s ability to deliver clear, detailed audio reproduction, enhancing the listening experience whether for music, film, or live performances.

Additionally, the amplifier features a high bandwidth response, capable of reproducing frequencies ranging from deep bass notes to shimmering highs. The low-frequency response is particularly noteworthy, as it retains clarity and control without muddiness. On the high end, the amplifier shines with a smooth, non-fatiguing treble that allows listeners to enjoy long listening sessions without discomfort.

Another characteristic that sets the Manley Labs 500/200 apart is its robust construction. The chassis is built with durability in mind, using heavy-duty materials that ensure longevity and stability. The amplifier is equipped with a user-friendly interface that allows for easy operation and adjustment, accommodating various settings and preferences.

Furthermore, the amplifier features advanced protection circuitry that safeguards against overloading, ensuring safe operation even during heavy usage. This not only protects the amplifier itself but also the connected speakers, providing peace of mind for users.

In summary, the Manley Labs 500/200 Watt Monoblock Amplifier combines power, sophistication, and timeless design, making it a top choice for anyone seeking superior audio performance. Its advanced technologies, coupled with a focus on sound quality, make it a worthy investment for both audiophiles and professionals alike.