Tube Amplifier Board 1969M Fet One Channel Board High Power Amp Accessory 1Pair

Description

Tube Amplifier Board 1969M Fet One Channel Board High Power Amp Accessory 1Pair
Specification:
Brand Name: Aiyima
Model Number: 1969M FET Amplifier Board
HOOD1969 is undoubtedly one of the most popular power amplifier circuits in history. It was designed by the famous British sound artist J. Hood in 1969.
1969MOS--that is, the combination of the classic 1969 circuit and a tubing field (UHC-MOS) current field-effect tube
Product name: IRF250 large tube version, 1 channel per board
Power supply: DC18-50V (recommended switching power supply ）The current is adjustable from 10 to 60MA, and the sound is very good when the current is small, but the heat sink needs to be enlarged for a large current.
Power output: 1W-30W
Note:
Before powering on, you must first check the power tube, insulate it, and install the radiator before powering on.
The current is 10-50MA (0.01-0.05A) adjustable, 30MA (0.03A) sound is very good, the current is large, the heat sink needs to be increased, don't pay attention! (Because the field-effect tube is a voltage drive element
You can get good results without a high current, 30MA is very nice, so it is very cool, high current is hot, and the sound quality is the same. )
The quiescent current debugging method is as follows:
Set the universal meter to the 10A or 20A DC gear, connect the two test leads in series with the positive power supply, adjust the 502/103 (5K/10k) adjustable resistance to change the power
The flow size is 0.03-0.06A (10-60MA)
Features:
1.It has the characteristics of small distortion, strong taste of the tube, strong dynamics, and transparent sound. The bass is strong, flexible, and not tired after listening for a long time. Another advantage is that it has low heat and saves heat sinks.
2.The current is adjustable from 10-50MA (0.01-0.05A), and the sound of 30MA (0.03A) is very good. The current need to increase the heat sink, pay attention! (Because the field-effect tube is a voltage driving element, it can achieve good results without a large current. 30MA is very nice. The large current is hot, and the sound quality is the same.)
Package Include:
1 x Pair 1969M FET Amplifier Board