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Product parameters:
Power supply :DC5V-12V
Interface :DC5.5x2.1/3.5mm
Input impedance :20K
Output impedance: 600Ω
Equalization circuit control range :±12dB
Balance frequency band :60Hz, 150Hz, 400Hz, 1KHz, 3KHz, 6.5KHz, 15KHz
1, seven stage balance adjustment range ±12db, composed of TI or ST original TL074 circuit
2, 60 hz, 150 hz, 40 ohz, 1 KHZ, 3 KHZ, 6.5 KHZ, 15 KHZ, seven frequency knob in the middle of the origin, counterclockwise for attenuation, clockwise for ascension; 60HZ for bass, 150HZ for bass, 400HZ for bass, 1KHZ for alto, 3KHZ for treble, 6.5KHZ for treble, 15KHZ for super treble, according to personal listening preferences to adjust.
3, pre-amplification gain :4580 classic op amp provides 5 times amplification (14db); The earphone part adopts the 47 earphone driving circuit composed of two NE5532, which can easily drive all types of earphones from 16 euro to 600 euro; Input impedance 20K, output impedance 600 OHMs;
4, 3.5mm input and output interface support 3 /4 pole plug, headset with microphone can be normal voice call on the phone, suitable for game lovers and music lovers, another group lotus interface terminal is available
5. Power supply: between DC5V-12v, the interface specification is 5.5*2.1, 5V power supply is static current 390ma, 12V power supply is about 14Oma, power consumption is about 1.8w.
Package Included:
1.*EQ-7 Audio Signal Headset Amplifier
1*12V Power Adapter
John L
Reviewed in the United States on March 31, 2025
I am an audio/video engineer and value sound quality. I purchased this for my kitchen stereo (300-watt amp, great sounding bookshelf speakers and a subwoofer) to go along with a nice 4K television. Before installing this into my system, I felt I wasn't getting the proper highs, midrange or even mid-lows that I was supposed to. The minute I received it (perfect 2-day delivery, Thank You Amazon), I took out of the box (packaged very well) and connected it. I had instant control over the sound of my system. After about 15 minutes of playing, I had it set perfectly. Great little unit! I didn't add any distortion or noise yet gave me the needed control to dial in the sound I wanted to hear.
Fischer
Reviewed in the United States on January 19, 2025
Plugged in power cord - used the RCA in/out plugs - power light blinked on and off - wouldn’t pass any audio - only output was a buzz timed to the blinking light - returned it to amazon with a note in this
Frank
Reviewed in the United States on April 7, 2025
I was having issues with my sound on Linux Mint. It always sounded like it was muffled and made it difficult to watch movies. I plugged this thing in and it worked. My sound is significantly better. If you're also having a "muffled" sound issue then get this thing as it will solve your problem.
Thor
Reviewed in the United States on August 15, 2024
This equalizer sounds pretty good if you don't push the input too hard. The sound is not pristine, but it's pretty darn good for the price.
DONNA MUREL
Reviewed in the United States on December 19, 2024
Inexpensive, reasonably quiet. Taking tips from the Rolling Stones soundman video,was able to dial in a good eq. Plenty of headroom. Good unit
Ken
Reviewed in the United States on December 14, 2024
Eq works great, however the supplied wall wart very noisy through radio. used old style wall supply now no problems. Good price
Jordan L.
Reviewed in the United States on December 12, 2024
What can I say about this other than it does what it says it does.I needed an equalizer for my earbuds to boost the bass, clean up the highs, and this little gem works perfectly.I use it almost every day and haven't noticed any issues at all.
Mark
Reviewed in the United States on October 27, 2024
I had to cut the mid tones from my radio to make it tolerable to listen to. This did the trick.I'm really quite surprised the 7 bands work as well as their labeled frequency ranges indicate. Great for what I needed - simple and effective at a good price.
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