ETI Sound Systems, INC manual Warning: Shock Hazard, AT-212- CONTROLS AND FEATURES

AT-212 - CONTROLS AND FEATURES

1. LOW/HIGH INPUTS: Plug your guitar in here. Use the input that best suits your playing style. Most players use the High input for maximum gain. For a cleaner sound, use the Low input. Always use a high quality, shielded instrument cable.

2. OVERDRIVE CHANNEL – GAIN 1: Adjusts the amount of distortion in Gain 1. (Activated LED indicates in use).

3. OVERDRIVE CHANNEL – GAIN SWITCH: Push switch Selects between Gain 1 and Gain 2 controls. Activated LED lights indicate which channel is currently use.

4. OVERDRIVE CHANNEL – GAIN 2: Adjusts the amount of distortion in Gain 1. (Activated LED indicates in use).

5. OVERDRIVE CHANNEL – BASS: Adjusts the amount of low frequency boost or cut as desired in the overdrive channel. Bass is B-52’s signature. Turning this control clockwise increases depth and low-end punch to your music.

6. OVERDRIVE CHANNEL – MIDDLE: Adjusts the amount of

WARNING: SHOCK HAZARD!

To reduce the risk of fire or electrical shock, do not expose this unit to rain or moisture. Do not operate your AT-212 near a pool or other standing water. Make sure all blades on the polarized power plug are fully inserted into the power source. Ensure the powercord is not stretched, pinched or otherwise abused. Ensure the power cord is routed to avoid foot traffic. Your AT-212 amplifier should be cleaned only with a dry cloth.

26. AC INLET & PRIMARY FUSE: Connects AC powercord and houses primary fuse.

Always use correct value as indicated on amp panel chart.

27. POWER TUBE FUSE: This fuse protects the AT-212 against circuit damage caused by a power tube failure. Only replace with a 1 AMP Fast Blo (never Slo Blo) fuse.

28. 3-SETTING RECTIFIER SWITCH:

SOLID-STATE – Gives tightest low-end definition and fastest attack. TUBE AB1 – Punchy, warm and tighter definition than Tube A.

4 TUBE A – “Vintage” attack and feel. Warmest sounding setting.

mid-range frequencies as desired in the overdrive channel. Similar to the Clean Channel function, the O.D. Channel Middle control adds body and punch to your sound.

7. OVERDRIVE CHANNEL – TREBLE: Adjusts the amount of high frequency boost or cut as desired in the overdrive channel. Turning this control clockwise adds clarity to your sound.

8. OVERDRIVE CHANNEL – GAIN SWITCH 1: Activates the CONTOUR control for Gain 1.

9. OVERDRIVE CHANNEL – CONTOUR: Varies the critical midrange tone in the overdrive channels. Adjusts from “classic” midrange punch to “scooped metal” madness.

10. OVERDRIVE CHANNEL – GAIN SWITCH 2: Activates the CONTOUR control for Gain 2.

11. OVERDRIVE – VOLUME 1: Controls the overall volume of the medium gain overdrive channel.

12. OVERDRIVE – VOLUME 2: Controls the overall volume of the high gain overdrive channel.

13. CHANNEL SELECT: Push switch selects between the clean and overdrive channels. Activated LED lights indicate which channel is in use.

14. CLEAN CHANNEL - BASS: Adjusts the amount of low frequency boost or cut as desired. Adding bass will increase the depth and fullness of your sound.

15. CLEAN CHANNEL - MIDDLE: Adjusts the amount of mid-range

29. GROUND / LIFT SWITCH: Removes ground from the circuit to eliminate 60-cycle hum.

30. LOUDSPEAKER OUTPUTS: Connects the AT-212 to the speaker cabinets such as the AT-412A or AT-412B.

NOTE: Always be sure the speakers are plugged in before attempting to operate the amplifier. Always use a high quality, heavy duty, unshielded speaker cable. Severe damage can occur from failing to connect the speakers and properly setting the impedance selector switch.

31. IMPEDANCE SELECTOR SWITCH: Allows the AT-212 to safely operate into any 4 ohm, 8 ohm or 16 ohm cabinets(s). NOTE: Always set the switch to match the impedance of your cabinet(s).