Amplifiers
R-35i Series
Integrated Vacuum Tube Power Amplifier
The R-35i utilizes four EL34 vacuum tubes for class AB1 push-pull power amplification, followed by two 12AX7 and two 12AU7 tubes for signal amplification and driving. The R-35i achieves an output power of 32W per channel.
The R-35i employs four EL34 vacuum tubes for class AB1 push-pull power amplification, complemented by two 12AX7 and two 12AU7 tubes for signal amplification and driving. The R-35i delivers an output power of 32W per channel. The entire R-35i unit features a pure vacuum tube design and is crafted with manual soldering processes. It includes an external, independent BIAS ADJ current monitoring meter and adjusting BIAS monitoring functions, which helps maintain the vacuum tubes in optimal condition at all times. Additional features include a 30-second silent delay function, ALPS motorized potentiometers, Bluetooth 4.0 connectivity, a headphone output function, and easy-to-install plug-in vacuum tube protective covers. The R-35i offers triode and ultra-linear functionality choices: triode mode produces a soft, pure, and smooth sound, suitable for enjoying vocals, string music, and similar genres; ultra-linear mode offers an open, unrestrained sound with significant presence, suited for enjoying large-scale scenes and dynamic types of music.
The body is made from aviation-grade aluminum alloy with piano paint.
The Bluetooth 4.0 connectivity and Bluetooth receiver.
High-grade ALPS motorized potentiometers made in Japan.
CNC-machined copper terminals plated with gold are aimed at further noise reduction and upgrades.
Details
Features of R-35i Series
Aluminum
The body is made from aviation-grade aluminum alloy.
Manual Soldering
We employ artisanal hand-soldering techniques to solder each component manually.
30s Mute Delay
The high-voltage mute delay can effectively protect the vacuum tubes.
ALPS
We use high-grade ALPS potentiometers that are made in Japan.
BIAS ADJ
The high-end external, independent BIAS ADJ current display meter.
Bluetooth 4.0
We have added the professional grade CSR8635 Bluetooth chip to this series.
Details
Sound of R-35i Series
Classical
This series has made every effort to restore classical music instruments, live performance ambiance, and vocal nuances.
Pop / Contemporary
This series has made the greatest effort to achieve the mid-frequencies and high-frequency vocals needed for pop music.
Symphonic / Live
This series makes the utmost effort to reproduce the soundstage of symphonic / live music faithfully.
Specifications
| Titles | Details |
| Output Power | 20W + 20W (Tubes Mode), 35W + 35W |
| Harmonic Distortion | 1% (1kHz) |
| Frequency Response | 10Hz ~ 40kHz |
| Input Sensitivity | 260mV |
| Input Impedance | 100KΩ |
| Output Impedance | 4Ω, 8Ω |
| Signal to Noise | 90dB |
| VACUUM TUBE | 12AX7*2, 12AU7*2, EL34*4 |
| Power | 260W |
| Unit Weight | 39.69lbs (18KG) |
| Unit Dimensions | 15.59″W * 7.87″H * 13.39″D (396mm W * 200mm H * 340mm D) |
| Voltage Options | Japan – 100V North America – 120V Europe/Asia/Australia/New Zealand – 230V |
| Working Temperature | 32°F to 104°F (0°C to 40°C) |
| Working Humidity | 20% to 80% |
| Temperature | -4°F to 158°F (-20°C to 80°C) |
| Humidity | 20% to 90% |
| Titles | Details |
| Output Power | 20W + 20W (Tubes Mode), 35W + 35W |
| Harmonic Distortion | 1% (1kHz) |
| Frequency Response | 10Hz ~ 40kHz |
| Input Sensitivity | 260mV |
| Input Impedance | 100KΩ |
| Output Impedance | 4Ω, 8Ω |
| Signal to Noise | 90dB |
| VACUUM TUBE | 12AX7*2, 12AU7*2, EL34*4 |
| Power | 260W |
| Unit Weight | 39.69lbs (18KG) |
| Unit Dimensions | 15.59″W * 7.87″H * 13.39″D (396mm W * 200mm H * 340mm D) |
| Bluetooth | v4.0 |
| Bluetooth Chip | CSR8635 |
| Bluetooth Input | AAC, MP3, SBC |
| Voltage Options | Japan – 100V North America – 120V Europe/Asia/Australia/New Zealand – 230V |
| Working Temperature | 32°F to 104°F (0°C to 40°C) |
| Working Humidity | 20% to 80% |
| Temperature | -4°F to 158°F (-20°C to 80°C) |
| Humidity | 20% to 90% |
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