Description

Specification:
PREAMP 7 MINI operational amplifier.
Full DC coupling mode, simple, not simple.
To avoid any distortion caused by the capacitor. As well as bandwidth limitations.
Low frequency to DC1HZ, high frequency to 1MHZ.
Using double-sided gold-plated military grade PCB material.
With the potentiometer can be easily installed in the chassis panel.
Prior to class can be better with MX50, L20, L6 and other power amplifier board to use.
Can be easily connected cable way, to avoid the wrong signal line connection arising from a variety of noise problems.

Is not recommended with a non-LJM design of the post-amplifier, non-LJM design with the amplifier if the incompatibility problems can not be resolved.

Low noise, 4 times magnification gain. Using AC 12-0-12V power supply.
Using the highest series of NCC filter capacitor. KZE ULTRA LOW ESR Capacitor.
TDK monolithic decoupling capacitor. Taiwan step low error potentiometer.
Operational amplifier standard Thd + N = 20hz-20k hz <0.0005% (OUTPUT 3.15VP) Frequency response: 10HZ-25K HZ (+ -0DB) P7MINI by the LJM design, excellent power supply design with reasonable wiring requirements.
Making PREAMP 7 MINI can play the JRC 4580D the perfect performance of this op amp maximum level.
JRC4580D official PDF document data: Wide Gain Bandwidth Product (15 MHz typ.) Low Distortion (0.0005% typ.) Slew Rate (5V / μs typ.) The following is the actual test chart P7MINI test environment:
AP SYS TWO:
THD + N Test:
(THD + N test represents only the actual distortion of the amplifier circuit, does not mean that listening level, THD data is small, not necessarily better than THD better listen, such as PREAMP9)
Figure test is the actual LJM I pro-test, the data are for reference only.
PCB area of 55 * 26 MM

Package: 1pc Preamp 7 Mini operational amplifier

P7-Mini Pre-Amplifier Amp Board 10HZ-25K HZ with Potentiometer

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Product review & video

hey guys this is Nitesh at Sweetwater in this video we'll be talking about preamps what they are what they do and different types of them that will help you choose the right one for your purposes before we dive in you should know that Sweetwater is not only a great resource for information about musical gear but also that we've got hundreds of thousands of products available in stock at any given time with sales engineers like myself waiting to help you out so visit us today at Sweetwater comm let's get started so what is a preamp preamp is short for pre amplifier a preamp is a kind of amplifier that's designed specifically to take really weak signals and well make them louder think about like a microphone when you plug it into something like a mixer or a recording interface what is going into is a kind of preamp you might wonder why you might be presenting your preamp with a weak signa