HF-2050 (third generation) Premium version amplifier major improvement：
- Pre-amp circuit with power supply completely independent, adjust and optimize the parameters of the parts, remove overheat resistor. This help the amplifier to produce low heat, better stability, better sound quality, treble more balanced.
- Relay using Japan’s OMRON which is excellent quality, stability and enhance the reliability of the machine
- Volume potentiometer using Japanese RK16 ALPS double potentiometer, help to make the key components to become more reliable.
- Balanced 1/RCA2/RCA3 three analog audio signal input.
- Balanced input upgrade to independent power supply, audio + / – input differential signal, making the audio signal restore to be more delicate, resulting to reproduce the high resolution and analysis, so that you can connect more advanced audio system, export balance input using a professional recording studio balanced input circuit, independent power supply, the BB opa2228pa balanced input and bottom with low noise, sound quality is more delicate, more sweet.
- Op-amp decoupling capacitor all independent regulated power supply, will decouple the affected op-amp that affect the sound quality, Loopback capacitor upgrade using Nichicon Muse Series – the flagship KZ Series, Nichicon KZ series high frequency capacitance which has a gorgeous and charming mid, good low which is sweet and delicate. The op amp input decoupling of Japan ‘s Top Chemical AVF audio capacitors which is small in size and using high quality oxygen-free copper pins. Crisp and clear high-frequency , low dive with good speed and big sound stage , very different from the traditional Japanese capacitors sound.Op amp input decoupling using Elna silmic2 matte version hi-fi audio capacitors, silmic2 very natural, the highest quality audio capacitors (third harmonic distortion) SILMIC improved version. This series not only natural in characteristics, the low is thick, the mid and high suffer from less distortion. Very ideal coupling and decoupling capacitor. The sound quality effect maximum signal coupling transmission after repeated testing comparison, we promise to ensure the stability of the power amplifier performance, the final choice of straight lotus root method, resulting in the widening of frequency response, high – low more excellent, sound more transparent nature. Optimize pre-amp circuit and with tuning, use high quality audio capacitor, resulting great improves in the sounding, circuit optimization to maximize
- Case material: aluminum structure design, high-grade refined aluminum knob, high-grade paint technology, elegant, is your mini desktop hi-fi amplifier of choice.
- Part of the amplifier components design, is tune by very experience audiophile, op-amp selection using hi-fi grade.
- Premium Edition: The input amplification op amp and the signal amplification op amp use two expensive AD797BD op amps. The AD797BD op amp has a particularly high resolution and excellent bass dynamics. The intermediate frequency is smooth and detail, and the vocals are rich and delicate. The driver op amp uses two BB flagship op amp OPA627AU single op amp, OPA627 has a particularly high resolution and excellent bass dynamics, medium frequency sleek and smooth, vocal rich and delicate, high and low frequency extension is very good, high resolution, vocal friendly, high frequency gorgeous Through, the intermediate frequency is pure, the low frequency dive and the strength are good, the sound field expands forward and backward!
- Deluxe Edition: Signal amplification and signal input are respectively adopted by New Japan high-fidelity sound quality JRC Ultimate dual-operating MUSES01 and MUSES02. The two flagship version of the dual op amp is a dual-circuit, J-FET input form semiconductor device developed for the pursuit of high sound quality without considering the cost, material size, and productivity of the device. The high-quality operational amplifier that is produced to capture the “real sound” of the soul is one of the most suitable operational amplifiers for advanced audio equipment. It is also the world’s first oxygen-free copper frame with a considerable improvement in sound quality. Known as the “original voice patron”, the sound is very pure, the resolution is good and there is no burr, the sound field is broad but the layers are distinct, the more the run sound is like tasting old wine. The driving force began to appear; the driver op amp uses two MUSES8920 op amps. The MUSES8920 follows the high-quality development concept pursued by MUSES01, and realizes the mass-optimized op amp optimized for chip and frame materials, which improves production capacity and reduces costs. Under the premise, a cost-effective production of a 2-circuit operational amplifier with bipolar input. In addition to the MUSES01/02 DIP package (dual in-line type), the product also takes into account the increased mass production capabilities of audio equipment manufacturers. The sound style of the MUSES8920 is similar to that of the MUSES01, and it can reproduce the “acoustic and sense of presence” that can only be experienced at the symphony concert scene, as well as the “breathing of the performer” that can only be felt in fashion clubs. Waiting for “real sound”, it is indeed a mass production type that is very suitable for high-end audio equipment.
- The Japanese Omron relay, boot time delay relay and shutdown quick disconnect function, completely avoid switch machine circuit instantaneously imbalance, resulting in DC output that will impact the speaker. This can help to prolong the lifespan of your loudspeaker
- Short circuit protection and DC protection function, respectively, the host and external connected loudspeaker protection, if encountered a fault in the wiring mistake or machine, This machine protection by disconnecting the output, so as to reduce any loses to minimum.
- EMC electromagnetic compatibility and compliance with the standard design of electrical safety, in line with UL, CE, CCC and other countries and regions of the security standards, to avoid the machine external electromagnetic radiation and the use of safety, so that your personal health and safety are safeguard.
- PCB the use of double-sided, blue oil, spray tin, RoHs design and production, the circuit is stable and reliable, the use of harmful substances released from the outside, to ensure your health.
- Using all precision resistance as a signal amplification processing, to ensure accuracy of the machine sensitivity, consistent in work, to ensure that the factory of each machine is consistent with the design requirements.
- The op amp input decoupling of Japan ‘s Top Chemical AVF audio capacitors which is small in size and using high quality oxygen-free copper pins. Crisp and clear high-frequency , low dive with good speed and big sound stage , very different from the traditional Japanese capacitors sound.
- Volume potentiometer using Japanese RK16 ALPS type double precision potentiometer, the internal use of high grade carbon film, with control precision, sound balance is excellent, rotation noise is extremely low, even for long time use the performance stable
- Professional quality custom toroidal transformer, A-class iron core, the iron core contact less, pure red copper wire winding, ensure the machine extremely low background noise and stability.
- Gold-plated copper crystal wiring column, gold RCA jack, in line with the States safety of switching power supply, power supply socket. Materials are carefully Selected and Consider.
– Rated RMS output power:
80Watts x 2,8Ω,THD=1% 77Watts x 2,8Ω,THD=0.007%
130Watts x 2,4Ω, THD=1% 125Watts x 2,4Ω, THD=0.08%
– Mono input and output power:
Mono input rated RMS output power 98Watts, 8Ω
Mono input peak output power 158Watts, 8Ω
-Ultra-wide frequency response: 18Hz~98KHz, -3dB, 1Watt
– The overall harmonic distortion rate of music: THD+N=0.05%
– Signal/noise ratio: >80dB, 1W/8Ω (without weighting) >105dB, 50W/8Ω (without weighting)
– Input impedance: 50KΩ Balance: 20KΩ
– Input sensitivity: 1V ± 50mV
– Channel separation: >65dB, 10KHz
– Power supply selection: 230VAC-240VAC 50-60Hz
– Full-power dual-channel output total machine consumption: 350Watts
– Machine size: length 271mm * width 190mm * height 71mm
– The net weight of the whole machine: 5.6Kg