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πŸ”Š koobook 1-piece ne5532 op amp hifi preamplifier signal amplification board - bluetooth pre-amp, dc 12v-35v logo

πŸ”Š KooBook 1-Piece NE5532 Op Amp HiFi Preamplifier Signal Amplification Board - Bluetooth Pre-amp, DC 12V-35V Review

3

Β·

Average

Revainrating 3.5 out of 5Β Β 
RatingΒ 
3.5
🍿 Home Theater, 🎡 Home Audio

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img 1 attached to πŸ”Š KooBook 1-Piece NE5532 Op Amp HiFi Preamplifier Signal Amplification Board - Bluetooth Pre-amp, DC 12V-35V
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img 4 attached to πŸ”Š KooBook 1-Piece NE5532 Op Amp HiFi Preamplifier Signal Amplification Board - Bluetooth Pre-amp, DC 12V-35V

Description of πŸ”Š KooBook 1-Piece NE5532 Op Amp HiFi Preamplifier Signal Amplification Board - Bluetooth Pre-amp, DC 12V-35V

With NE5532 op amp as the core, it is made with high-quality capacitors and high-precision five-color ring metal film resistors. Gain: 5 (default. It is will gain 10 change if R5 and R6 to 100K ohm). DC single power supply, power supply range 12-35V, Working current: about 600mA, double panel design, easy to use, good effect. Mounting Hole: 3.0mm, PCB size: 50*40*16mm, small size, easy to put in any small size machine. Use for low sensitivity of tone generator.

Reviews

Global ratings 3
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Type of review

Revainrating 3 out of 5

Major Disappointment - Poor Audio Quality

As a newcomer in the Home Audio world, I bought this product based on the high ratings it received. However, Electronics are definitely not its forte. As a result of my tests, I determined that the audio quality was terribly low and full of static. The only good thing about this preamplifier is its Bluetooth connectivity, which is easy to set up. Unfortunately, that doesn't make up for the overall poor performance. Would not recommend.

Pros
  • Easy to use with Bluetooth connectivity
Cons
  • Requires a DC12V - 35V power source, limiting its portability

Revainrating 4 out of 5

Improves the performance of the microphone, but nothing with a dead head is used.

I tried it as a preamplifier for the microphone included in my citizen base station. It didn't amplify the deadhead mic, so I hooked up an active mic to it. Then a little magic happened. This gave the power microphone more power and hi-fi sound. I get compliments for AM and SSB. Also prepare some ferrite beads for the line to the radio. Rudedog 255 West Georgia.

Pros
  • single DC power supply, supply range 12-35V, working current: about 600mA, dual-panel design, easy to use, good effect.
Cons
  • I will write later

Revainrating 4 out of 5

Improves the performance of the microphone, but nothing with a dead head is used.

I tried it as a preamp for the microphone included in my citizen base station. It didn't amplify the deadhead mic, so I hooked up an active mic to it. Then a little magic happened. This gave the power microphone more power and hi-fi sound. I get compliments for AM and SSB. Also prepare some ferrite beads for the line to the radio. Rudedog 255 West Georgia.

Pros
  • With the NE5532 operational amplifier as its core, it consists of high-quality capacitors and high-precision metal film resistors with five color rings.
Cons
  • Reliability