ToneWinner AD-5300PA Amplificatore di potenza a 5 canali Amplificatore HIFI Classe A/B 5X300W@8Ω

Tone Winner Amplifier AD-5300PA

Audio Specifications:

• Topology: Fully discrete, dual differential, high current, short signal path Class A/B - Class "H" power supply.
• Numbers of Channel: 5 Channels - High powered single channel modules.
• Power Output: ( Rated Power; THD <0.1% @ 115V (Tested @ AC 115V) - (AC 240V Will Increase the output wattage and maintain the THD<0.1%.)
• 300 watts RMS/channel; 20 Hz – 20 kHz; THD<0.1%; 8 Ohms; one channel driven.
• 530 watts RMS/channel; 20 Hz – 20 kHz; THD<0.2%; 4 Ohms; one channel driven.
• 267 watts RMS/channel; THD<0.1%; 8 Ohms; two channels driven.
• 430 watts RMS/channel; THD<0.1%; 4 Ohms; two channels driven.
• 210 watts RMS/channel; THD<0.1%; 8 Ohms; all five channels driven.
• Power Bandwidth (at rated power; 8 Ohm load): 20 Hz to 20 kHz (+ / – 0.1 dB).
• Broad-Band Frequency Response: 10 Hz to 70 kHz +0/-2 dB.
• THD + noise: < 0.012%; at 100 watts RMS; 1 kHz; 8 Ohms.
• Signal to Noise Ratio (8 Ohm load):
• > 117 dB; ref FTC rated power; unbalanced input (A-weighted).
• > 91 dB; ref 1 watt; unbalanced input (A-weighted).
• Minimum Recommended Load Impedance (per channel): 4 Ohms (which equals one 4 Ohm load or two paralleled 8 Ohm loads).
• Damping Factor (8 Ohm load): > 154.1.
• Input Sensitivity (for rated power; 8 Ohm load): 1.5 V.
• Gain: 28.43 dB.
• Maximum Power Consumption: 1652 watts.
• Power Supply: 110V-240V: 15 Amps - 20 Amps Auto Switching Class "H"Power Supply.
• Material: Aluminum
• Modules: Separate Heatsinks for individual modules. 
• Color: Black
• Front Panel: Analogue meter with blue LED lights and Red Needle. 
• Weight: 22.4KGS ( 49.38 Lb)
• Unit size: 17.48 L X 17.52 W X 7.6 H Inches
• Package size：22.52 L X 22.52 W X 12.64 H Inches
• Accessories: Power cord cable.
• Warranty: 2 years warranty

The whole machine adopts HI-FI high-fidelity design and structural craftsmanship. The panel adopts black aluminum alloy and elegant and restrained acrylic plate inlay, and is lined with a striking lake blue mechanical pointer voltmeter. The power amplifier is dynamic and elegant when it is working. . The overall visual effect is very fashionable, low-key and luxurious without losing taste.

The whole machine adopts HI-FI high-fidelity design and structural craftsmanship. The panel adopts black aluminum alloy and elegant and restrained acrylic plate inlay, and is lined with a striking lake blue mechanical pointer voltmeter. The power amplifier is dynamic and elegant when it is working. . The overall visual effect is very fashionable, low-key and luxurious without losing taste.

As you can see from the picture of the power amplifier opening the cover, it is a high-fidelity circuit structure that completely adopts the independent 5-channel modular separate component power amplifier unit circuit board. To put it more bluntly, this is a unit with 5 independent High-fidelity power amplifier for channel amplification, and the HI-FI circuit and process, layout, and materials used in each channel are almost the same. 5 identical circuit boards with five professional-level large cast aluminum molding combs The shaped radiator is installed in the machine in a vertical and equidistant manner. This design and manufacturing process is more conducive to quickly dissipate the heat generated when the power amplifier is working.

The circuit of each channel of the power amplifier is designed in accordance with the Class A circuit, the quiescent current of the circuit at all levels, especially the current of the power amplifier stage is larger, and the power reserve is more abundant! Five huge heavyweight cast aluminum comb-shaped radiators ensure the technical basis of 5-channel power output.

This is a very classic and well-received high-fidelity HI-FI circuit. Almost all of Tianyi’s HI-FI power amplifiers use this circuit (such as the famous AD-68, AD-8PA and other HI-FI famous machines) ), deja vu, right? The input part of the circuit adopts optional balanced/unbalanced input, ultra-low noise double differential amplifier circuit and mirrored constant current source load, which can greatly improve the signal-to-noise ratio of the whole machine and increase the voltage gain of the voltage amplifier stage And stability, widening the frequency response of the hearing threshold range, the second stage is a common base circuit amplification and mirrored constant current source load, the purpose is to further increase the voltage gain and effectively improve the linear characteristics of the circuit amplifier stage, making it more suitable for home theater high In order to improve the stability and reliability of the power amplifier circuit itself, the final stage of the circuit specially designed a temperature compensation circuit and a DC servo circuit, and an appropriate amount of negative feedback circuit was designed to ensure that the sound pressure is dynamic, strong driving force, and high conversion rate. The stability of the machine.

Finally, through 3 pairs of famous and sound ON Semiconductor NJW0302G/NJW0281G audio dedicated high-power tubes, a three-stage Darlington circuit constitutes a push-pull output, which provides a powerful power of 300W per channel and 8 ohms. The whole machine has a total of 5 channels, and 30 NJW0302G/NJW0281G high-power tubes are really powerful!

To ensure the machine's strong power output and strong driving force. The machine is specially designed with high-frequency soft-switching switching power supply for high-fidelity audio.

Compared with the traditional linear power supply, this kind of audio-specific switching power supply has obvious advantages: firstly, it is small in size and lighter (the volume and weight are only 20-30% of the linear power supply); secondly, it is the conversion of AC to DC. High efficiency and more power saving (switching power supply efficiency is generally higher than 85%, while linear power supply is only 30-40%); third, its own anti-interference is strong, so it is more stable and reliable, and the voltage range is wide, and the power supply is unstable The influence of the factor is small; fourth, the switching power supply we designed for audio has an oscillation frequency of up to 70kHz or even higher, which is far beyond the hearing range of the human ear. Even if a very common filter circuit is used in the circuit, there will be no hum , So that the sound can reach the realm of "translucent, clean and pollution-free".

With the improvement of digital electronic technology and audio technology, the advantages of switching power supplies for audio have become more prominent. The switching power supplies developed and used in the early stages are often criticized by audio enthusiasts due to their large ripple, large noise floor, and electromagnetic interference. The sound background is louder, the sound quality is not delicate, the hair is dry and not oily, and the lack of music..." and other issues have been completely abandoned. The current switching power supply surpasses the traditional linear power supply not only in terms of reliability, stability, anti-interference ability, high efficiency, energy saving, and environmental protection, but also excellent in sound quality and high-fidelity linear power supply. As a result, many world-renowned audio brands have gradually mass-produced high-fidelity audio amplifiers powered by this type of audio-specific switching power supply. Even with high-fidelity amplifiers that sell for more than 100,000 yuan, there are many power supply circuits that abandon the bulky giant transformers. , And then adopted a special high-frequency switching power supply for audio with small size, light weight, high conversion efficiency, reliability, anti-interference ability, and sound quality. For example, the well-known Italian brand Powersoft, Switzerland LAB.GRUPPEN (Lico), Denmark Bang&Olufsen amplifiers, etc., which have a reputation in professional and cinema nowadays, are all world-famous brand products that have achieved outstanding performance in this regard.

Comprehensive review:
This is a high-end, high-end, home theater and high-fidelity music taste, high-fidelity sound effects and excellent sound quality tone, powerful, practical and convenient high-definition decoding post-level high-power amplifier, can be matched with AD-7200HD high-definition audio and video decoder , To form a high-definition home theater with good effects.

This high-end home theater can not only smoothly read movies in high-definition formats including Dolby TrueHD, Dolby Digital Plus, DTS Master, DTS HI RES, etc., but also has a high-definition resolution of 4K, 2K technology, a built-in high-definition player, and support for online networks Connection and WIFI connection, fully support Miracast, DLNA, Airplay and other wireless audio and video transmission functions; have three external USB interfaces, support local U disk/hard disk audio and video playback; have 6 HDMI1.4 interface inputs, 2 HDMI Output; with 7/5 channel completely independent HI-FI high-fidelity high-power after-level equipment, the sound effect is completely comparable to a million-level pure two-channel HI-FI amplifier! These features are sufficient to show that he is the current masterpiece of high-end home theater. If you are a person who has strict requirements for sound quality and sound effects, looking forward to a good compatibility in a set of equipment to watch blockbuster movies and listen to lossless high-fidelity music, and can play lossless Bluetooth, support a variety of wireless audio and video transmission, and comes with high-definition For super audio enthusiasts with playback capabilities, this set of front and rear split high-definition cinema amplifiers will be your ideal choice!
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