Hi-fi Rose RA180

• Next Generation Class AD (Advanced D) Amplifier

1. Remarkably improved the linearity of the sound by applying the new material GaN (Gallium Nitride)
2. Supports Bi-Amping by applying 4 independent amplifier modules
3. Amplifier module supports up to 100kHz Super Tweeter range
4. Designed 1100W class high-output power stage
5. Supports PHONO AMP

• Next generation Gallium Nitride FET Applied Class AD Amplifier

In terms of power amplifier design, Class D is theoretically a topology that provides complete linear output at 0% distortion
and 100% power efficiency.
In order to achieve the perfect Class D design theory, the switching operation speed and accuracy must be secured.

To improve this problem, RA180 implemented a perfect linear output by applying a Gallium Nitride FET insteadof a Silicon FET to dramatically improve the Dead Time, which affects switching speed and accuracy, to less than 1/10.
The perfect linear output goes beyond the existing Class D limits and creates a natural sound like an analog amplifier.

• Four new mono amplifier modules RA180 supports Stereo and provides two channels each for Left and Right.
  The Amplifier module supports 200W ( 4 Ω , 8 Ω ) to output 400W of stereo channels.
  In addition, BTL mode is supported, and speaker operation is possible by configuring 2 channels 400W+400W.
  Two independent amplifier modules per channel supports bi-amping to drive the high, mid, and low
  frequencies respectively, reducing the effect of back electromotive force generated by the speaker to create a frequencies respectively, reducing the effect of back electromotive force generated by the speaker to create a more natural sound.
• Generous design that outputs even the super tweeter area  It is known that the human hearing range has an upper limit of 15 kHz to 20 kHz. Temporarily high treble extends well
  beyond 20 kHz. If the sampling rate of the sound source is 88.2 ㎑ ~ 192 ㎑, the frequency range of 40 ㎑ ~ 96 ㎑ is recorded. RA180 contributes to the realism of the original sound as it faithfully reproduces a wide frequency range by
  designing a wide frequency response so that even high-resolution sound sources are not filtered with an output range of 20Hz to 100kHz (+/-1㏈ ).
• PHONO Amplifier with Variable EQ
  It supports MOVING MAGNET and MOVING COIL inputs with simple switch selection.
  To respond to various records, it is equipped with a low-band BASSTURNOVER and high-band ROLL OFF selection function
  and provides high-purity EQ values using 0.1% error range parts for high-precision calibration circuits.RA180 contributes to the realism of the original sound as it faithfully reproduces a wide frequency range by
  designing a wide frequency response so that even high-resolution sound sources are not filtered with an output range of 20Hz to 100kHz (+/-1㏈ ).It is equipped with a high-solid Active (OP-AMP type: 12dB Slope) EQ, not a 6dB gentle Slope Passive (CR type)
• Active X-OVER for H/F output
  RA180 supports H/F speaker output and has an active crossover function that sets high frequency output when using a
  super tweeter.
  It is adjusted from a minimum of 600㎐ to a maximum of 6㎑ and outputs from the set frequency to 100㎑.Super Twitter improves low-pitched details and adds details to the harmony of the entire audio range. Feel the potential of recorded sound sources by adding super tweeter to your typical speaker environment
• BASS, TREBLE, BALANCE control
  RA180 has a basic output tendency of FLAT and is equipped with a tone control, allowing maximum and maximum +/- 15
  dB adjustment of Bass (100 Hz) and Treble (10 KHz), respectively.
  The tone control circuit is equipped with a high fidelity active (OP-AMP type: 12dB slope) EQ instead of a passive (CR type) with a gentle slope of 6dB.
• High-efficiency power supply
  The power supply circuit developed exclusively for RA180 is suitable for power supply without using Silicon FET. Silicon. Carbide FET (High Voltage, High Heat Resistance) technology is applied to provide high output with high efficiency and low heat generation. In addition, it responds to a rapid load by applying a self-designed 2.5kW class PFC circuit and a large-capacity capacitor. In terms of figures, it has a damping factor of 200 or more and a high-output power supply of 1,000W, and it is
  a relaxed design that faithfully supports powerful bass and wide treble.
• Convenient remote control function
  The dedicated remote control allows you to adjust the remote-motorized analog main volume and input selector. It is convenient to use by controlling the input selector in a sophisticated control method.In addition, the LED display of the input selector automatically detects the input signal as it is saturated and notifies it by  blinking.
• Bypass·Power AMP mode, Speaker A/B selector
  Bypass · Power Amp mode is a function that connects the input source of LINE 3 to the POWER AMP without going through the PRE AMP. However, if the input level is high when switching to the Bypass · Power Amp mode, it may damage the speaker, so before using it , activate this function in the mobile app and then turn the switch OFF to ON. If you have 2 sets of speakers, you don't have to change the connection every time and simply change the output to switch operation.