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PYLE Hydra 4-Channel Amplifier User Manual

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PYLE Hydra 4-Channel Amplifier User Manual

PYLE Hydra 4-Channel Amplifier


PREMIUM 4-CHANNEL AMPLIFIER: Designed as a 4-channel marine amplifier to reproduce sound quality from space. This powers your speakers and is universally compatible with many types of headphones, such as MP3s and smartphones. RCA Stereo Input: This hydra marine amplifier is equipped with a premium RCA input for easy operation.

This also includes a 3.5mm to RCA adapter so you can connect your device and remote for volume control. Short circuit protection: it has a power protection circuit and is soft on/off. These are to protect the amplifier and the vehicle’s electrical system from short circuit conditions. Power 400 Watts: This amplifier is powerful with a maximum power of 400 watts. Adjustable input gain control with 2 to 4-ohm speakers. it is also waterproof.

Products with a power plug are designed for use in the United States. Power and voltage are different around the world and an adapter or converter may be required for these products to be used in your location. Please check compatibility before purchasing.

Fine-tune your sound

Turn on the switch and increase the position behind the drain plug that is still lit when the sound is turned on. Customize your sound setup to sound the way you want. Adjust Input Level: Adjust the input sensitivity of the amplifier. If you are connected to a LINE-level source (usually an RCA-type connection), the switch must be in the LINE (output) position.

Turn the switch to the SPEAKER position when connecting to a speaker output, headphones, or an electric vehicle. Polarity: This switch allows the user to optimize the bass when there is more than 1 speaker group in the system that produces bass. Play music with strong bass and alternate between NORMAL and REVERSE until you decide which setting gives the best bass response. Gain Control: Adjusts the overall level of the amplifier. When using an amplifier without volume control, the level must be adjusted to equalize with the other speakers in the system.

In general, you should keep the gain as low as possible while continuing to ensure that the system reaches full output power. Voice Control: Waterproof remote control volume control plug. When loaded, this control will turn the amp off when fully closed. RCA Stereo Input: Connect an external audio source such as an iPod or another MP3 player.

Installation Precautions

  • Before you drill or cut any holes, investigate your vessel’s layout very carefully.
  • Take special care when you work near the gas tank, fuel lines, hydraulic lines, and electrical wiring.
  • Never operate the amplifier when it is unmounted. Attach all audio system components securely within the amplifier to prevent damage, especially in an accident.
  • Do not mount this amplifier so that wire connections are unprotected, in a pinched condition, in contact with any metal surfaces in your marine vessel, or likely to be damaged by nearby objects.
  • Before making or breaking power connections in your system, disconnect the marine vessel battery. Confirm that your head unit or other equipment is turned off while connecting the input jacks and speaker terminals.
  • If you need to replace the power fuse, replace it only with a fuse identical to that supplied with the amplifier, Using a fuse of a different type or rating may result in damage to your audio system or your amplifier which is not covered by the manufacturer’s warranty.

Don’t misuse the level of control!

  • Do not mistake the input level control for volume control! It is designed ONLY to match the output level of your audio source to the input level of your amplifier.
  • Do not adjust this input level to maximum unless your input level requires it.
  • Ignoring these instructions will result in an input overload to the amplifier and excessive audio distortion. It can also cause the protection circuit to engage

Controls, Input, and Output Cables:

PYLE Hydra 4-Channel Amplifier FIG 1

The switches and gain settings are located behind a watertight plug, which also lights up when the amplifier is on. Be sure to replace the plug when finished with adjustments.

  1. The INPUT LEVEL switch selects the input sensitivity of the amplifier. If you are connecting to a LINE-level source (typically any RCA-type connection) then the switch should be in the LINE (out) position. When connecting to loudspeaker outputs or headphones or high-level sources then set the switch to the SPEAKER (in) position.
  2. The POLARITY switch allows the user to optimize bass performance in the case that there are more than 1 set of loudspeakers producing bass in the system. Play some music with strong bass content and listen with the switch alternately in the NORMAL and REVERSE positions until it can be determined which setting results in a more pleasing bass response.
    If in doubt, or if any interaction with other speakers is unlikely, then leave the switch in the NORMAL position.
  3. The GAIN control adjusts the overall level of the amplifier. When using the amplifier without volume control the level should be set to achieve a balance with other loudspeakers in the system.
  4. VOLUME CONTROL Plug for the waterproof remote volume control. When installed, this control will turn off the Marine Amplifier Kits when turned all the way down.
  5. INPUT Stereo RCA audio input for connecting other audio devices.
  6. To Connect Bluetooth
  • Turn on the amplifier, the red Bluetooth indicator LED keeps blinking at this moment.
  • Look for the “Bluetooth” function in your phone setting and open it.
  • Search the Bluetooth device which is the “Pyle amplifier”. After you connect the Bluetooth successfully, the red Bluetooth indicator LED will stay on.
    Bluetooth Version: 3.0.

Only models PLMRMB4CW and PLMRMB4CB feature built-in Bluetooth.

Power and Speaker Wiring

PYLE Hydra 4-Channel Amplifier FIG 2

Wire Color

  • Red
  • Black
  • Blue
  • White
  • White/Black
  • Gray
  • Gray/Black
  • Green
  • Green/Black
  • Purple
  • Purple/Black

Additional Features

  • 4 x 100 Watts RMS at 4 Ohms
  • 4 x 200 Watts Max at 4 Ohms
  • 4 x 300 Watts RMS at 2 Ohms
  • Fuse: 10A
  • RCA Line Input
  • T.H.D: <0.05%
  • Soft Turn On/Off
  • S/N Ratio: >95dB
  • Anti-Thump Turn-On
  • 2 Ohms Stereo Stable
  • Power Protection Circuitry
  • Channel Separation: >65dB
  • Volume Gain Remote Control
  • Remote Control for Volume Gain
  • Converter: High Low-Level Inputs
  • Frequency Response: 10Hz – 40kHz
  • Dimensions: 6.10” L x 3.35” W x 1.38” H


  • Battery (+), 12dc
  • Barrery (-), Ground
  • Remote Turn On, 12vdc = ON CH1 (+)
  • CH1 (-)
  • CH2 (+)
  • CH2 (-)
  • CH3 (+)
  • CH3 (-)
  • CH4 (+)
  • CH4 (-)




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