Brzhifi 001type Stk428-640 Thick Film HiFi Digital Power Amplifier Post-Stage Power Amplifier

Product Description

Features STK428-640 is a fever-grade product introduced by Sanyo Company of Japan in 2000. Although it is a Class D circuit, it is carefully made in strict accordance with the traditional tuning style of Sanyo for Class A and Class B circuits. The sound is warm and resistant to hearing. Both low frequency and high frequency are extended. It maintains the sound characteristics of thick mode circuit and does not have the digital flavor of the current digital power amplifier. Moreover, it is an actual power output of 200WX2 @ 4 Ohm. This model has many characteristics such as high efficiency, low heat generation, high power and excellent sound effect, and can meet more than 99% of audio amplification requirements. In its PDF file, it is shown that each channel can obtain 200W power under 4 ohm load, and the distortion (THD) is only 0.8%. This machine comes standard with a switching power supply with an actual power of 600W to ensure an effective output power of 200WX2. STK428-640 module adopts PWM CMOS logic level audio input mode. This audio input mode can effectively reduce noise, distortion and interference, greatly improve the clarity, dynamic range and fidelity of the audio, so as to bring users a better listening experience.
The power supply equipped with 600W is a real LLC power supply, and its resonant circuit is a high-frequency sine wave, not an ordinary square wave switching power supply. This power supply is very suitable for power amplifiers, with excellent results, sales as high as 98%, and static power consumption of the whole machine at 19W. At the same time, its electromagnetic radiation is low, which is beneficial to reduce the interference to the surrounding equipment.
This machine is a pure rear-stage power amplifier, which can be used with front-stage equipment according to requirements. The rear-stage power is very strong. The measured 200W continuous output power is undistorted. It can easily push medium and large bookshelves and floor speakers with high cost performance.

Output	200W+200W 4Ω 130W+130W 8Ω Measured
Type of power amplifier	Class D
Frequency response	25Hz-25KHz
Magnification	4Ω 63x 8Ω 48x
Static power consumption	19W
Input impedance	50KΩ
Input sensitivity	680mV
Output impedance	4-8Ω
Dimensions	170 W *54 H *198 D mm
Weight	1.48KG

Company Profile Packing&Shipping FAQ 1.Who are we?
We are based in Guangdong,China,start from 2014,sell to Domestic Market(95.00%),South Asia(3.00%),Eastern Europe(2.00%). There are
total about 101-200 people in our office.
2.How can we guarantee quality?
Always a pre-production sample before mass production;
Always final lnspection before shipment.
3.What can you buy from us?
Audio Amplifier,Audio Chassis
4.Why should you buy from us not from other suppliers?
Independent design and production,our company's trademark is BRZHIfi the main products include audiophile amplifier,audiophile
headphone amplifier,high-end audio decoder,HIFI tube amplifier,digital amplifier,linear power supply,aluminum enclosure.
5.What services can we provide?
Accepted Delivery Terms:Express Delivery;
Accepted Payment Currency:USD,CNY;
Accepted Payment Type:T/T,Cash;
Language Spoken:English,Chinese