SubZero SZ-PPA2 Pro Phono Preamplifier USER MANUAL

Introduction

Thank you for purchasing the SubZero SZ-PPA2 Pro Phono Preamplifier. To help you get the most out of your new product, please read this manual carefully.

Instructions

The SubZero SZ-PPA2 Pro Phono Preamplifier features several controls and connections on its front and rear panels. The front panel includes:

Front Panel Components:

• 1 - LED Power Indicator: Indicates when the unit is powered on.
• 2 - Power Button: Used to switch the unit on and off.
• 3 - Headphone Output: A 1¼" jack connection for headphones.
• 4 - Filter Button: When engaged, this button reduces frequencies below 100Hz by -3dB to help remove turntable rumble.
• 5 - Clip / Signal Indicators: A green indicator lights when an input signal is detected. A red clipping indicator lights if the input signal is too large, prompting the user to reduce the input signal level.
• 6 - Input Gain Knob: Controls the level of the input signal entering the unit.
• 7 - Monitor Level Knob: Controls the volume for the headphone output.

Rear Panel Components:

• 8 - RCA Output: For connecting to a mixer, amplifier, or other audio equipment.
• 9 - RCA Input: For connecting a turntable.
• 10 - Ground Terminal: A terminal for connecting the ground wire from a turntable to reduce hum.
• 11 - DC12V Power Input: Connects to the included 12V DC power supply.
• 12 - DIN Output: An older connection type for outputting audio to mixers or amplifiers. Note: Do not use RCA and DIN outputs simultaneously.
• 13 - DIN Input: An older connection type for inputting audio from a turntable. Note: Do not use RCA and DIN inputs simultaneously.

DIN connectors are a traditional connection type that is less common now but may be found on older audio equipment.

Operating Instructions

To operate the SZ-PPA2:

1. Connect the audio outputs from your turntable to either the RCA or DIN input on the SZ-PPA2.
2. If necessary, connect the turntable's ground wire to the Ground Terminal (10) to minimize hum.
3. Connect the supplied 12V DC power adapter to the DC12V Power Input (11) and plug it into a mains outlet.
4. Press the Power Button (2) to turn the unit on. The Power Indicator (1) will illuminate.
5. Adjust the Input Gain Knob (6) to set the input signal level. The Signal Indicator (5) will show when a signal is received. Aim to avoid clipping (when the red indicator lights up) by reducing the input gain if necessary.
6. Connect the SZ-PPA2's outputs (RCA or DIN) to your amplifier, mixer, or recording device. Ensure you do not use both RCA and DIN outputs at the same time.
7. Connect headphones to the Headphone Output (3) to monitor your audio signal.
8. Adjust the Monitor Level Knob (7) to control the headphone volume.
9. Use the Filter Button (4) to engage the low-cut filter, reducing frequencies below 100Hz by -3dB, which can help reduce turntable rumble.

Specifications