1.) Fader  Primary control for adjusting the input  level during operation.

2.) Peak LED  - When illuminated, indicates that  the channel level is approaching the clipping point.

3.) Limiter LED  - When illuminated, indicates that the  channel limiter is active and is reducing  the channel gain to prevent overload.

4.) Gain (Trim)  - Coarse input gain control. Sets the initial  input sensitivity level so that the Fader  can be used for fine gain adjustments

5.) Polarity Reverse Switch – Input 2  - When engaged, the polarity of Input 2 is  reverse (180° out-of-phase) with respect  to inputs 1 and 3. Useful to flip the  stereo image with MS stereo

6.) Limiter Switch  - Activates both input and output  limiters. ON is dual-mono limiter  operation, LINK is stereo operation.  Output limiter threshold is set in the  Setup Menu.

7.) Output Meter – Sunlight-viewable , 20-segment LED meter

8.) Slate Mic/Tone Switch  - Two-position switch ,activates the slate  microphone in the left (momentary) position, or the tone oscillator in the  right (latched) position. Additional  options are available in the Setup Menu

9.) Pan Switch  - Assigns the input channel to the output  bus. Left-only, Center (equal left and  right), or Right-only

10.) High-Pass Filter  (Low Cut) – Three-position switch engages the high-pass filter.Used  to reduce excessive low frequencies.

11.) Stereo Link LED (Inputs 1 & 2)  - Indicates that inputs 1 and 2 are linked  as a stereo pair. Controlled in the Setup  Menu. In L/R stereo link input 2 Fader  controls overall stereo level. When in  MS position input 1 Gain (Trim) controls  Mid, input 2 Gain (Trim) controls the amount of stereo (Side) information and the input 2 Fader controls the overall MS stereo level

12.) Meter Brightness  - Controls the brightness of the LED  output meter. Each push selects among  the four brightness levels

13.) Meter Ballistics  - Toggles among the available meter  ballistic options: VU-only, peak-only,  combo peak/VU, peak-hold/VU.

14.) Headphone Selector Switch  - Sets the signal source sent to  headphones. Options include: input PFL  1, 2, 3; left output bus; right output bus; Mono (summed left and right); STereo master; RTN - stereo monitor return; MS-mono; MS-stereo; RTN-MS

15.) Headphone Volume  - Adjusts the overall volume of the  headphones. NOTE: the headphone  output is capable of ear-damaging  levels. Take care when adjusting among signal sources.

16.) Headphone LED  - Indicates signal overload in the  headphone and RTN circuits.

17.) Battery Check Button  -Press and hold to display the internal  and external battery levels on the output  meter. Battery level remains for two  seconds after button release

18.) Power Switch/LED  - Three-position switch, selects between  internal battery power or external DC  sources, middle position is off. Power LED illuminates when power is on. LED  flashes when voltage reaches low limit

Input Panel Features:

1.) XLR Inputs  - Transformer-balanced channel inputs.  Pin-1 = ground; pin-2 = ‘hot’; pin-3 =  ‘cold’. Can be unbalanced by grounding pin-3 to pin-1 of the XLR connector.

2.) Mic/Line Channel Switch  - Selects the input level of the adjacent connector. Mic level has 40 dB more gain than line level.

3.) Phantom/DYNamic/T-Power Selection  - Selects the microphone powering type  of the adjacent input. DYN position turns off all microphone powering. Mic powering is selected per input. NOTE: Use T-Powering only for T-Powered microphones.

4.) Phantom Voltage Selector – Selects between 48V or 12V phantom voltage for all input channels.

5.) Headphone Output – 3.5mm TRS stereo headphone output.Can drive headphones from 8 to 2000 Ohms to required monitoring levels

Output Panel Features:

1.) XLR Master Outputs  - Active-balanced outputs. Pin-1 =  ground; pin-2 = ‘hot’; pin 3 = ‘cold’. Can be unbalanced by using pin-2 for signal and pin-1 for ground.

2.) Battery Tube  - Holds three-AA batteries for internal powering. Accepts alkaline, lithium, or NiHM rechargeable cells.

3.) Return (Channel 4/5) Level Control  - Adjusts the gain of the return feed to balance program and monitor signals in headphones.

4.) Return (Channel 4/5) Input  - Unbalanced stereo 3.5-mm input connector for return monitor audio. 3.5mm wired tip = left, ring = right, sleeve = ground. Connection used for inputs 4 & 5 when selected in Setup Menu.

5.) Mix In  - An input to the master bus designed exclusively to link the Tape Out/ Mix  Out of 302, 442, MixPre, or MP-2 to the 302 for additional inputs. Pin-1 = ground, pin-2 = left, pin-3 = right. Shell of TA3 connector must be grounded to pin-1 to open connection.

6.) Channel 4/5 Activation LED  - When illuminated, indicates that the  return connector is now set as input 4  and 5 in the Setup Menu.

7.) Output Attenuation LED  - When illuminated, indicates that the  XLR output connectors are set for a level  other than the factory default line level.

8.) Tape Out / Mix Out  - Unbalanced stereo output on TA3-type connector. Same program as master output. Pin-1 = ground, pin-2 = left, pin-3 = right. Also used to link to the Mix In of a 442 or 302.

9.) DC Input  - Accepts DC voltages from 5–18 VDC for  mixer powering. Hirose 4-pin connector  wired pin-1 negative (–), pin-4 positive (+). Ext DC is completely isolated (floating) from the rest of the circuitry.

Mixer Linking: