<p><span style="font-size: 18px;">Product selling point</span></p><p><span style="font-size: 18px;">1: Widely used</span></p><p><span style="font-size: 18px;">2: The operation is simple and easy to understand</span></p><p><span style="font-size: 18px;">3: Classic Class A 1969 discrete power amplifier board</span></p><p><span style="font-size: 18px;">4: Class A power amplifier has better sound quality than ordinary types</span></p><p><span style="font-size: 18px;">5: 2 channel stereo</span></p><p><span style="font-size: 18px;">&nbsp;</span></p><p><span style="font-size: 18px;">Configuration details parameters</span></p><p><span style="font-size: 18px;">Power supply voltage: DC12-30V (direct current)</span></p><p><span style="font-size: 18px;">Power supply: 40W or more is recommended</span></p><p><span style="font-size: 18px;">Output power: 20W X 2 MAX</span></p><p><span style="font-size: 18px;">Output impedance: 4-16 ohms</span></p><p><span style="font-size: 18px;">Channel: 2 channel stereo</span></p><p><span style="font-size: 18px;">Feature: Classic Class A 1969 Discrete Power Amplifier Board</span></p><p><span style="font-size: 18px;">Size: 130*50*60mm (length * width * height)</span></p><p><span style="font-size: 18px;">Net weight: 383.6g</span></p><p><span style="font-size: 18px;">&nbsp;</span></p><p><span style="font-size: 18px;">important hint</span></p><p><span style="font-size: 18px;">1. The maximum power depends on the power supply voltage power and speaker impedance;</span></p><p><span style="font-size: 18px;">2. Please pay attention to monitor the temperature of the heat sink during use, if necessary, it is recommended to use a fan to assist heat dissipation;</span></p><p><span style="font-size: 18px;">3. The design size is for reference only, and there is a deviation from the actual product, please refer to the actual product. The new version is designed with 1969 Class A power amplifier, with superior performance in materials and indicators.</span></p><p><span style="font-size: 18px;">1969 is a more distinctive power amplifier, a very special current negative feedback circuit, which is different from common voltage feedback, without high frequency compensation, very wide frequency response, and very high stability.</span></p><p><span style="font-size: 18px;">The board is compatible with common power tubes such as TIP41C and TTC5200. After actual audition, because it is a Class A power amplifier, the sound quality is better than ordinary Class A and B or digital power amplifiers, and the music flavor is very strong!</span></p><p><span style="font-size: 18px;">The kit uses fully imported fever capacitors, original transistors, and industrial-grade Kingboard FR-4 high-quality spray tin plate. The weldability and durability are guaranteed, and the improvement of sound quality is also obvious.</span></p><p><span style="font-size: 18px;">Two M3 screw holes are specially designed at the bottom of the heat sink to fix the power amplifier to the chassis, which is not only firm, but also more conducive to heat dissipation.</span></p><p><span style="font-size: 18px;">&nbsp;</span></p><p><span style="font-size: 18px;">Checklist</span></p><p><span style="font-size: 18px;">1*Amplifier kit</span></p><p><br/></p>