14 best drok home amplifiers

• PARAMETER --- power supply voltage DC 5V; output power 5W(2Ω 5V) / 3W(4Ω 5V) / 1.8W(8Ω 5V); input method is monaural input.
• PROTECTION --- power supply input reverse connection protection; short-circuit protection; over-heat protection; EMI is allowed to pass.
• PERFORMANCE --- efficiency >90%; general harmonic distortion noise <10%; low quiescent current and noise suppression.
• MATERIAL --- noble black immersion gold circuit board, KEMET speaker capacitor, large-capacity filter capacitor for channels, black copper terminal blocks, gold-plated audio input terminal blocks.
• ADDITIONAL FUNCTION --- available to choose different amplifier type to be connected; available to add an external shutdown; available to add an external mute.

User questions & answers

Product description

DROK Blue~tooth 5.0 Audio Amplifier Board

Parameters

Power Supply Voltage: DC 5-27V, the best range is DC 8-24V.

Amplifier Chip: TPA3116D2 (Anti-interference Class D high efficiency power amplifier)

Channel: Left + right channel stereo

Output: LC filter output, high-definition sound quality

Transmission Distance: > 15m in the condition of no obstruction

Protection: Anti-static, power supply anti-reverse connection, short circuit protection, overheating protection, over voltage protection, under voltage protection, DC protection.

Adaptation Speaker: 10W-200W, 4Ω/8Ω

Output Power: 10W*2@12V, 8Ω; 20W*2@12V, 4Ω; 20W*2@18V, 8Ω; 40W*2@18V, 4Ω; 30W*2@22V, 8Ω; 50W*2@21V, 4Ω



Instruction on Blue~tooth Connection

When the Blue~tooth board is powered on, the blue LED flashes quickly and enters the Blue~tooth connection mode. Then search for XinYi on the phone, tap "XinYi" to complete the connection with an alert tone being played, and the blue LED turns strongly bright. At this time, open the phone music player to play music, the Blue~tooth LED will flash slowly which means being playing.



For other precautions, please carefully read the User Manual.



Package Includes:

DROK Blue~tooth Amplifier*1

• Parameter --- Power supply voltage: DC 5-27V, over 2A (the best input range is 8-24V), can be powered by 12V or 24V; Dual channel: Left and right channels; Output power: 50W+50W, recommended 4Ω/8Ω speakers; Blue~tooth version: 5.0.
• Blue~tooth/AUX/USB Input --- This stereo amplifier board supports three types of input: 1. Blue~tooth 5.0, as being designed with a PCB antenna, in the condition of no obstruction, the visible distance of the connection can reach 15m, but do note that it must be far away from the router when using it; 2. AUX; 3. Type-C port for USB input. When being powered on, default to enter Blue~tooth mode.
• HD Sound Quality & Volume Control --- With the LC filtered output, the sound played by this power amplifier can be high quality, clean and pure. By effectively reducing electromagnetic interference, it won’t get much background noise. And the volume control is easy to operate: rotate to turn up or down; Short press to stop or move on; Long press to turn on or off.
• Heat Dissipation --- Pure aluminum heat sink and shell heat dissipation, by which the large heat dissipation area to ensure high power and high performance operation.
• Protection --- Anti-static, power supply anti-reverse connection, short circuit protection, overheating protection, over voltage protection, under voltage protection, DC protection.

Product description

Product Parameters:

Amplifier type: AV amplifier

Channel: 2 channel

Weight: 0.154kg

Resistance: 4ohm

Dimension: 78*70*38cm

Input voltage: 12V-24V

Input current: at least 2.5A

Bluetooth connecting distance: within 10 meter



Bluetooth standard: Bluetooth 4.0+EDR Headset power: 105mW*2

Speaker output power: 50W*2

Power input: DC 12V-24V 3A--4A



Note:

Connect the speakers, please use 12V power supply; Connect the headset, please use 5V power supply; Recommend speaker power is 10W to 120W.

Bluetooth not connect succeed: power off it and restart again

Amplifier no sound: check whether volume normal, confirm insert DC 12V-24V power

Aux audio input no sound: only can use 3.5mm audio signal cable

IBM(Lenovo) PC cannot connect the Bluetooth with this amplifier, need to download the Bluetooth driver then connect Bluetooth device,

click>> Control Panel, find the "Sound" option, setting Bluetooth as the default device.



Package includes:

1pcs Bluetooth amplifier

1pcs audio signal cable(1.2m length)

1pcs AV audio signal cable(1.5m length)

1pcs US-type power supply

• 50W+50W DUAL CHANNEL: DROK Bluetooth receiver amplifier is able to tolerate DC 9-24V wide voltage input and provide 50W+50W powerful output. Besides, this Amp module is with DC 12V 5A US-type Power supply adapter to make the use more convenient and the output more stable.
• TINY SIZE BUT WITH STRONG BLUETOOTH RANGE: Our Bluetooth speaker amplifier is with colourful shell and ultra-small size (78×70×38mm), but its Bluetooth transmitting range is up to 30 feet, even in the basement, the signal is strong.
• EXCELLENT SOUND QUALITY: With advanced technology and chip, our Bluetooth stereo amplifier has good sound quality, no distortion, no humming or hissing and sounds clear, crisp.
• SUPER COMPATIBILITY: Our Bluetooth audio transmitter can be widely applied to various tablet PC, TV, smartphone, Laptop with Bluetooth, iPhone and etc, versatile and simple to use.
• WHAT U GET: The package includes 1pcs bluetooth amplifier, 1pcs audio signal cable(1.2m length), 1pcs AV audio signal cable(1.5m length), and 1pcs US-type power supply.

User questions & answers

• Blue~tooth Board Parameter---input voltage range DC 5V-24V, support micro USB 5V power supply; blue~tooth version 4.2.
• Blue~tooth Board Input Method---3.5mm AUX input & 2.54mm 3P AUX input.
• Blue~tooth Board Output Method---3.5mm audio output & 2.54mm 3P audio output.
• Audio Amplifier Board Parameters---working voltage is DC 5V, output power is 5W (2Ω 5V)/3W (4Ω 5V) / 1.8W (8Ω 5V). Input method is monaural input.
• Audio Amplifier Board High Performance---the digital amplifier module is with high efficiency of over 90%, general harmonic distortion noise is less than 10%, low quiescent current and noise suppression.

• Parameter --- The black one: Input voltage range DC 5V-24V, support micro USB 5V power supply; blue~tooth version 4.2. The blue one: Power supply voltage: DC 5-27V, over 2A (the best input range is 8-24V), can be powered by 12V or 24V; Dual channel: Left and right channels; Output power: 50W+50W, recommended 4Ω/8Ω speakers; Blue~tooth version: 5.0.
• Application --- Headphone, speaker, home stereo system DIY.
• Input --- The black one: 3.5mm AUX input & 2.54mm 3P AUX input. The blue one: 1. Blue~tooth 5.0, as being designed with a PCB antenna, in the condition of no obstruction, the visible distance of the connection can reach 15m, but do note that it must be far away from the router when using it; 2. AUX; 3. Type-C port for USB input. When being powered on, default to enter Blue~tooth mode.
• HD Sound Quality & Volume Control --- The blue one: With the LC filtered output, the sound played by this power amplifier can be high quality, clean and pure. By effectively reducing electromagnetic interference, it won’t get much background noise. And the volume control is easy to operate: rotate to turn up or down; Short press to stop or move on; Long press to turn on or off.
• Protection --- The blue one: Anti-static, power supply anti-reverse connection, short circuit protection, overheating protection, over voltage protection, under voltage protection, DC protection.

Product description

TDA7297B Parameters:

Voltage：DC 9V to 18V(suggest you to use 12V DC in at lease 2A)

Power: 15W+15W

Peak power: 30W+30W

Output anti-resistance: 4 to 8 ohm

Features:

1.Adopts TDA7297 dual-channel amplifier chip; DC power supply and can use 12V battery as direct power supply

2.With potentiometer knob and heat sink on the board and can be used simply by connecting its wires

3.Working efficiency as high as 90%, quite enery-saving; the amplifier can play continuously for 5 hours with 12V motor battery as power supply

4.Has wiring terminals(please use screwdriver) and requires no electric iron for fast wiring connection

5.You can use this amp board for DIY speaker, easy and convenient; reasonable circuit design; has no impact sound and static noise

6.Its PCB circuit module adopts 1.6mm-thick FR-4 high-quality fiberglass;there are fixing holes if you want to use larger heat sink

Power supply:

Input voltage: AC 100 to 240V 50/60Hz

Output voltage: DC 12V

Output current: 2A Max

Voltage accuracy: +/- 5%(in empty load)

Power supply polarity: inside is the positive and outside is negative

Speaker Parameters:

Outer diameter: 78mm

Speaker height: 52mm

Anti-resistance: 4Ω

Diagonal screw hole distance: 83mm

Sensitivity: 90dB

Effective frequency: 108Hz to 20KHz

Hole diameter: 71mm



Package include:

1PCS TDA7297B module

1PCS Power supply

2PCS Speakers

• Blue LED indicator which lights on when the amp module power on
• With potentiometer knob, hence easy and convenient for adjustment
• Large capacitance of 2200UF and has heat sink
• 2.0 dual-channel power output of 15W+15W; can be connected to 4 to 8Ω, 10 to 50W speaker

User questions & answers

• 5W+5W Parameters: DROK audio amplifier board working voltage is DC 5V, output power is 5W (2Ω 5V)/3W (4Ω 5V) / 1.8W (8Ω 5V). Input method is monaural input.
• 50W+50W Parameter --- Power supply voltage: DC 5-27V, over 2A (the best input range is 8-24V), can be powered by 12V or 24V; Dual channel: Left and right channels; Output power: 50W+50W, recommended 4Ω/8Ω speakers; Blue~tooth version: 5.0.
• 5W+5W Safe Protection: the class D dual-channel amp board is designed with input reverse connection protection, short circuit protection, over heat protection; what's more, EMI is allowed to pass.
• 50W+50W Protection --- Anti-static, power supply anti-reverse connection, short circuit protection, overheating protection, over voltage protection, under voltage protection, DC protection.
• 50W+50W HD Sound Quality & Volume Control --- With the LC filtered output, the sound played by this power amplifier can be high quality, clean and pure. By effectively reducing electromagnetic interference, it won’t get much background noise. And the volume control is easy to operate: rotate to turn up or down; Short press to stop or move on; Long press to turn on or off.

• PARAMETER --- Operating voltage DC 9V-18V, recommend DC 12V; Max output power 2x35W (18V/4Ohm); Can be connected 4~8 ohms speakers.
• PROPERTY --- Class AB, 2.0 dual channel.
• INPUT METHOD --- 3.5mm audio cable input.
• PROTECTION --- Input reverse connection protection; Short-circuit protection; Over-current protection; Over-temperature protection.
• FEATURES --- Volume adjustment knob; Noble black immersion gold circuit board; KEMET speaker capacitor, large-capacity filter capacitor for channels; Black copper terminal blocks; Gold-plated audio input terminal blocks.

• Blue~tooth Board Parameter --- input voltage DC 5V~35V, support micro USB 5 volt power supply input. 4.2 version blue~tooth, support memory connection; blue~tooth effective transmission distance 10-15m/32.8-49.2 feets.
• Blue~tooth Board Output --- 3.5mm audio output terminal & 2.54mm 3P audio output terminal.
• Amplifier Board Parameter --- input voltage range is DC 9-18v; output power is 30W+30W; can be connected to 4-8 ohm speakers.
• High Performance --- the amplifier board adopts high-grade pure black immersion gold circuit board, KEMET speaker capacitor, double NICHICON large-capacity filter capacitor per channel, high-quality monolithic filter capacitor and metal film resistor. These provide a high performance for this audio amplifier board.
• Adjusting Knob --- this dual-channel amplify module is comes with a adjustable knob, the volume can be adjusted conveniently.

Product description

Features:

Amplifier chip: TDA7498

Output power: 100W+100W (Vcc = 36 V, RL = 6Ω, THD: 10%)

Output power: 80W+80W (Vcc = 34 V, RL = 8Ω, THD: 10%)

Wide range single power supply: 15-34VDC(recommended 24V)

Applicable speaker impedance: 8 ohm best(4 ohm or 6 ohm also works)

Four fixed gain settings available: 25.6 dB, 31.6 dB, 35.1 dB and 37.6 dB

Adopts differential input to minimize common-mode noise

Protection: short-circuit protection, over temperature protection

With standby and mute features

High efficiency: 90%

 

Description:

The TDA7498 is a 100W+100W dual-BTL class-D audio amplifier with single power supply designed for home theater and active speaker applications. It adopts 36-pin PowerSSO packaging with exposed pad up (EPU), more convenient to mount a separate heatsink.

 

Mode:

The TDA7498 has three kinds of modes: standby, mute and normal working mode(you can set the mode by shorting the pins shown on pictures).

Standby mode: all circuits closed, at a low power state;

Mute mode: all input signals connects ground, the duty cycle of forward/backward PWM output signal is 50%;

Normal working mode: the amplifier works normally.    



Package Includes:

1 x TDA7498 Amplifier Board

User questions & answers

• Parameters: DROK audio amplifier board working voltage is DC 5V, output power is 5W (2Ω 5V)/3W (4Ω 5V) / 1.8W (8Ω 5V). Input method is monaural input.
• Artificial Material: this New-designed mini power amplifier is made of noble black immersion gold circuit board, imported KEMET speaker capacitor, large-capacity filter capacitor for channels. Besides, we customized black copper terminal blocks and gold-plated audio input terminal blocks for this new amplifier module.
• High Performance: the digital amplifier module is with high efficiency of over 90%, general harmonic distortion noise is less than 10%, low quiescent current and noise suppression.
• Safe Protection: the class D dual-channel amp board is designed with input reverse connection protection, short circuit protection, over heat protection; what's more, EMI is allowed to pass.
• Additional Function: it is available to connect amplifier type to choose different function (MODE: high electricity level is Type D, low electricity level is Type AB. Factory defaults high electricity level); available to add an external Shutdown (SD: the chip will be Shutdown at low electricity level, factory default high electricity level.

User questions & answers

• Amplifier's parameters --- DROK audio amplifier board working voltage is DC 5V, output power is 5W (2Ω 5V)/3W (4Ω 5V) / 1.8W (8Ω 5V). Input method is monaural input.
• High performance --- the digital amplifier module is with high efficiency of over 90%, general harmonic distortion noise is less than 10%, low quiescent current and noise suppression.
• Amplifier's input --- 3.5mm audio cable input/3P extension cable input.
• Stereo audio cable property --- 3.5mm male to male audio aux cable.
• Stereo audio cable length --- 3.28 Feet / 1 Meter.

• Amplifie's parameter --- working voltage DC 9-18V, recommend 12V; max output power 35W*2 (18V 4Ω), can be applied to 4-8Ω speakers.
• Amplifier's input --- 3.5mm audio cable input.
• Stereo audio cable length--- 3.28 Feet / 1 Meter.
• Cable property --- 3.5mm male to male audio aux cable.

• Amplifier's parameter --- working voltage DC 9-18V, recommend 12V; max output power 35W*2 (18V 4Ω), can be applied to 4-8Ω speakers.
• Amplifier's input --- 3.5mm audio cable input/3P extension cable input.
• Stereo audio cable property --- 3.5mm male to male audio aux cable.
• Stereo audio cable length --- 3.28 Feet / 1 Meter.