CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN

IMPORTANT SAFETY

INSTRUCTIONS!

1) Read these instructions.

2) Follow all instructions.

3) Keep these instructions.

4) Heed all warnings.

5) DO NOT turn on the AT-212 without the loudspeaker connected.

6) Do not use the AT-212 near water. Be extra cautious when moving the AT-212 during rain or while transporting it over wet surfaces as water might splash onto the amplifier.

6) Clean only with dry cloth.

7) Do not block any ventilation openings and operate in accordance with manufacturer’s instructions.

8) Do not install near heat sources such as radiators, stoves or other devices that may produce heat.

9) Do not defeat the safety purpose of the polarization or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit your outlet, consult an electrician for replacement of the obsolete outlet.

10) Protect the power cord from being walked on or pinched, particularly at the plug and the point where it exits the AT-212 amplifier.

11) Only use attachments / accessories specified by B-52 Professional.

12) Unplug the AT-212 during lightning storms and when not in use.

13) Refer all servicing to qualified personnel. Servicing is required when the AT-212 has been damaged in any way such as when power-cord or plug is damaged, liquid has been spilled into the amplifier, the unit has been exposed to moisture or rain, does not operate normally, or has been dropped.

14) To reduce the risk of fire or electric shock, do not expose the AT-212 to rain or moisture.

15) Moisture can damage the AT-212 and can cause corrosion of electrical contacts.

16) Keep the unit out of extended or intense direct sun light. No containers filled with any type of liquid should be placed on or near the AT-212.

17) Never remove the front or rear panels of the AT-212 while it is connected to an electrical outlet.

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INSIDE THIS INSTRUCTION MANUAL

Important Safety Instructions / Features

.....2

Product Information

3

AT-212 Controls

4-5

Set-up & Warranty Information

5-7

Contact Information

8

AT-212 ALL-TUBE COMBO

This AT-212 is a 3-channel, all-tube, tri-mode rectified combo that gives you unparalleled tone and astounding versatility. The clean channel yields sparkling vintage tone that stays clean even at high volume. The overdrive section features 2 independent high-gain channels and independent volume controls with a shared 3-band EQ. The assignable contour (mid-scoop) control gives you the ability to make each over- drive channel sound radically different. The Global section features Low-Res (Resonance), Reverb and Master Volume.

λAll-Tube Signal Path

λTri-Mode Rectifier: Tube - Class A or AB, Solid-State - Class AB

λOverdrive Channel: Gain 1 and Gain 2 Each with Independent Master Volumes, 3-Band EQ, Assignable Contour Control

λClean Channel: Master Volume, 3-Band EQ and Bright Switch

λGlobal Controls: Volume, Low-Res (Resonance) and Reverb

λEffects Loop with Level Controls (Footswitchable)

λLine Out with Level Control

λSelectable 4 / 8 / 16 Ohms External Speaker Jacks

λ4-Position Footswitch: Channel, Gain, Reverb and Effects Loop

λGround Lift Switch

λRugged 18mm Baltic birch construction

λDetachable casters for easy transport

λDimenisons: 27” (W) x 11” (D) x 21” (H)

λWeight: 80lbs.

HEED ALL WARNINGS!

WARNING: To reduce the risk or fire or electrical shock do not expose this

equipment to rain or moisture.

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ETI Sound Systems, INC manual Important Safety Instructions, AT-212 ALL-TUBE Combo

AT-212 specifications

ETI Sound Systems, INC has made significant strides in the field of audio technology with its flagship product, the AT-212. This speaker system has garnered attention for its impressive sound quality, versatility, and innovative features, making it a popular choice among audio enthusiasts and professionals alike.

The AT-212 is designed to deliver an exceptional sound experience, thanks to its dual 12-inch woofers that provide deep, resonant bass and impressive mid-range response. Coupled with a high-frequency compression driver, the system ensures crystal-clear treble, making it ideal for both music playback and public address situations. This combination of drivers allows the AT-212 to produce a wide frequency range, ensuring that every note is accurately represented.

One of the standout features of the AT-212 is its robust construction. The cabinet is built from high-quality, durable materials designed to withstand the rigors of regular use, whether in a concert setting, a nightclub, or a home audio system. ETI Sound Systems has also invested in advanced acoustic engineering to ensure that the speaker minimizes distortion, providing clean and accurate sound reproduction across its operating range.

The AT-212 incorporates advanced technologies that set it apart from its competitors. With built-in digital signal processing (DSP), users can enjoy optimized audio performance tailored to their environment. This feature allows for precise equalization and can adapt the sound output according to the acoustics of the space, ensuring the best listening experience in various settings. The user-friendly interface contributes to the system's appeal, making it easy for users to customize their sound without needing extensive technical knowledge.

Portability is another key characteristic of the AT-212. Weighing in at a manageable size, it includes integrated handles and mounting points for easy transport and setup. This makes it an excellent option for DJs, live performers, and event planners who need to move equipment frequently.

In terms of connectivity, the AT-212 offers a variety of options, including XLR inputs and outputs, allowing for seamless integration with other audio equipment. It also supports both passive and active configurations, providing flexibility for different user needs.

In summary, the ETI Sound Systems, INC AT-212 is a powerful, versatile speaker system that combines solid construction, innovative technology, and user-friendly features. With its ability to deliver high-quality sound across a range of applications, it stands as a reliable choice for audio professionals and enthusiasts alike, ready to enhance any audio experience.