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Specification
Amperage : 0.09 amps
AudioOutputEffects : Overdrive
Brand : Generic
BulletPoint : The first Zero watt stereo amplifier that will fit in your pedal board and replace a full amplifier signal chain, achieving unprecedented analog realism thanks to its stereo mic’d cabinet simulation, stereo FX loop, tube-like power amp stage, and a full featured clean preamp based on 3 classic amps.
BulletPoint1 : Crossover Point: 500HZ, 5kHZ, that is, 20HZ‑500HZ is bass output, 500HZ‑5KHZ is midrange output, 5KHZ‑20KHZ is treble output.
BulletPoint2 : Easy to Install: Designed to have a light weight and a compact size as well, the installation is very convenient.
BulletPoint3 : Board Structure: 3 channel output, treble, bass, midrange, which ensures good sound quality and more audio enjoyment.
BulletPoint4 : NE5532P Chip: Other op amp chip such as OPA2604AP OP275G TL072, etc. can also be replaced, very simple and practical.
BulletPoint5 : Filter Type: Subtractive divider, also comes with ‑24dB/Oct attenuation slope, so the preamp module has high efficiency.
Color : Black
ControlsType : Knob
ExternallyAssignedProductIdentifier : 7696640010467
HardwareInterface : 1_4_inch_audio
IncludedComponents : No
ItemName : Audio Preamplifier Board, Treble Midrange Bass Output 3 Channel 500HZ 5kHZ Crossover Point Preamp Module for Replacement
ItemPackageDimensions_Height : 3 centimeters
ItemPackageDimensions_Length : 13 centimeters
ItemPackageDimensions_Width : 10 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : electric-guitar-amplifier-preamps
Language : english
Manufacturer : Generic
Material1 : Plastic
Material2 : Metal
ModelName : Genericz7rf2e51dv
ModelNumber : Genericz7rf2e51dv
NumberOfItems : 1
PartNumber : Genericz7rf2e51dv
PowerSourceType : 9 V power DC
ProductDescription : 1. NE5532P Chip: Other op amp chip such as OPA2604AP OP275G TL072, etc. can also be replaced, very simple and practical.
2. Board Structure: 3 channel output, treble, bass, midrange, which ensures good sound quality and more audio enjoyment.
3. Crossover Point: 500HZ, 5kHZ, that is, 20HZ‑500HZ is bass output, 500HZ‑5KHZ is midrange output, 5KHZ‑20KHZ is treble output.
4. Filter Type: Subtractive divider, also comes with ‑24dB/Oct attenuation slope, so the preamp module has high efficiency.
5. Easy to Install: Designed to have a light weight and a compact size as well, the installation is very convenient.

Specification:
Item Type: Preamp Module
Model: NE5532
Material: PCBA
Attenuation Slope: -24dB/Oct
Product Size: Approx. 98 x 84 x 20mm / 3.86 x 3.31 x 0.79in
Power: DC positive and negative, 9-15V.

Package List:
1 x Preamp Module

Note:
The 10k resistor in the picture cannot be changed.
The R calculated by the calculation software is too large, such as C=1nF, f=5kHz, according to the formula f=0.707/(2X314Rc) the data is very accurate, R=22k. So the following number.
According to (Increase C by 10 times, R remains unchanged, f becomes 1/10 of the original) For reference only:
When C=1nF, f=5kHz, R=225k (the accurate data should be 22k)
C=1nF, f=4.7kHz f, R=24K.
C=1nF, f=4.4kHz #f, R=256k.
C=1nF, f=4.1kHz f, R=183k
C=1nF, f=3.8kHz Hf, R=19.7k.
When C=1.5nF, f=3.5kH, R=214kC=1.5nF
When f=35kHz, R=21.4k
When C=15nF, f=32kHz, R=235k (I used C=15nF, R=22k, use the formula f=3333Hz, use soft piece f=3410Hz)
C=2.2nF, f=3kHz Hf, R=17k
C=2.2nF, f=2.8kHz Hf, R=183k
C=2.2nF, f=2.5kHz f, R=20.5k.
C=2.2nF, f=2.2KHz Hf, R=233k
C=2.7nF, f=2.2kHz Bf, R=19k.
C=2.7nF, f=2KHz Hf, R=20.8k.
C=3.3nF, f=1.8kHz Hf, R=19k.
C=3.3nF, f=1.5kHz f, R=22.7k
When C=47nF=1.3kH, R=184k
C=4.7
At 1kHz, R=24k
C=6.8nF, f=1kHz f, R=16.6k.
When C=68nF, f=900Hz, R=18.4k
C=6.8nF, f=800Hz f, R=20.7k
C=6.8nF, f=700kHz Hf, R=23.6K.
When C=10nF, f=700Hz, R=16.1k
C=10nF, f=600Hz Hf, R=18.8k.
When C=10nF, f=500Hz, R=225k (the accurate data should be 22k)
The good effect is related to the relative accuracy of the and capacitance data, especially the needs to be relatively consistent in size. Choose the largest and smallest capacitance in the parallel connection place, so that the error will be smaller.
ProductSiteLaunchDate : 2025-04-23T12:40:21.584Z
SignalFormat : Analog
Size : US Plug
StreetDate : 2025-02-03T08:00:00.000Z
Style : Us Plug
SupplierDeclaredDgHzRegulation : not_applicable
SupplierDeclaredHasProductIdentifierExemption : 1
UnitCount : 0.01
UnspscCode : 32101500
Voltage : 9 volts
WarrantyDescription : Manufacturer warranty for 90 day.