OPERATIONAL NOTES

SWITCHING ON

The power switch is located on the back panel. You shouldn't need to turn the Stingray around or get yourself behind it. You should be able to "feel" the rocker switch located next to the AC power cord. Flip the switch away from the power cord to turn on the Stingray or towards the power cord to turn off the unit.

RUNNING

It is not recommended that you leave your Stingray stay permanently switched on. This only wastes electricity and tube life. The Stingray reaches peak operating condition in approximately 30 minutes.

TUBE LIFE

As with all tubes, their quality degrades with age. This is due to decreasing cathode emission, a natural process found in all tubes. We recommend that you have your amplifier checked every

4-5 years, depending on usage. An excessive increase in noise level or very unstable output tube bias can indicate the need to replace a tube.

REPLACING A TUBE, INDICATOR LAMP or FUSE. You should read page 14 and 15 for more details if you need more specific info. You may need a small Phillips screwdriver and the correct replacement fuse, tube or lamp. First be sure the unit is off and remove the IEC mains cable. Let it sit for 20 minutes to be sure all power supply capacitors are discharged otherwise one could still get a shock even though the unit is unplugged. Gently wiggle the tube around while pulling it out of the socket. Avoid bending the printed circuit board. Before putting a new tube in, look at it. Check to see that the pins are straight and that they line up to the socket. You should be able to gently push the tube into the socket without excessive force. If it is the indicator lamp that needs replacing, remove the bottom cover. Six screws near the sides hold it in place - when these are removed, the cover should slide off. You will see what looks like a fuse directly behind the black name panel. Gently pry the lamp out and replace it with another lamp and not a fuse. Replace the cover before powering up the unit. The mains fuse is in the IEC power connector sub-assembly. The fuse cover is a grey rectangle with a large slot and a small slot. The small slot is to help remove the cover. A fingernail or small screwdriver in the small slot is used to gently push or pry the tab towards the bulk of the grey cover. It should pop open. The two B+ fuses are located under the bottom cover; see pg 8 under "ONE CHANNEL DEAD" for details on replacing these. Refer to pg 17 for proper fuse types.

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Manley Labs INTEGRATED AMPLIFIER owner manual Operational Notes, Switching on
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INTEGRATED AMPLIFIER specifications

Manley Labs has a long-standing reputation for producing high-fidelity audio equipment, and their integrated amplifier is a shining example of this legacy. Catering to audiophiles who appreciate both performance and finesse, the Manley Labs Integrated Amplifier combines powerful technology with artistic design.

One of the most notable features of the Manley Labs Integrated Amplifier is its renowned vacuum tube design. Utilizing high-quality 12AX7 and 12AT7 tubes, the amplifier delivers warm, rich sound that is characteristic of tube amplification. This vintage-inspired technology creates a unique listening experience, offering dynamic range and harmonic richness that solid-state amplifiers often struggle to replicate. Additionally, the product’s advanced circuitry ensures low distortion and excellent frequency response.

An elegant chassis houses this sophisticated amplifier, enhancing both aesthetics and acoustic performance. The front panel is designed with simplicity in mind, featuring easily accessible volume controls and inputs for a variety of sources, including vinyl turntables, digital sources, and streaming devices. The dual-mono topology, where each channel has its dedicated power supply and amplification, further enhances stereo imaging and separation, resulting in a more immersive soundstage.

The Integrated Amplifier is equipped with Manley’s proprietary features, including a passive volume control and selectable equalization options. This helps users customize their listening experiences according to personal preferences or their specific audio setups. With a high output power rating, the amplifier is capable of driving a wide range of loudspeakers, making it versatile for various audio configurations.

Another key characteristic is the incorporation of modern connectivity options while maintaining a classic sound. With balanced and unbalanced inputs, as well as headphone outputs, the Manley Labs Integrated Amplifier combines traditional tube warmth with contemporary flexibility. This adaptability allows it to remain relevant in a rapidly evolving audio landscape.

Overall, the Manley Labs Integrated Amplifier is a harmonious blend of cutting-edge technology and classical appeal. Its meticulous craftsmanship, attention to detail, and performance capabilities make it a preferred choice for connoisseurs of exquisite sound quality, ensuring that music is delivered with authenticity and elegance. Whether for home listening or professional applications, this integrated amplifier stands as a testament to Manley Labs' commitment to audio excellence.
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