FX-AUDIO brand vacuum tube line preamp. Incorporating technology cultivated in successive models, it drives well even though it is small. Can be driven by a 12V AC adapter (Fujisawa Yukishi)
Maintenance information: 2023.1.15 operation confirmed
Accessories: none
Main specifications: W98 x H33 x D99 mm (excluding protrusions) 279 g
* AC adapter is not included. A vacuum tube line preamp from the Northflat Japan FX-AUDIO brand. The high quality sound has evolved from the previous model TUBE-01 by strengthening parts and circuits such as installing a gain setting switch. There are no noticeable scratches on the exterior (Satoshi Yonejima)
Maintenance info: 2022.2.10 operation confirmed
Accessories: instruction manual, original box
Main specifications: Frequency characteristics 20Hz to 35kHz W95 × H60 × D99.5mm (not including protrusions) Main body weight strength 305g
*Comes with an AC adapter sold separately! A vacuum tube line preamp from the Northflat Japan FX-AUDIO brand. The high quality sound has evolved from the previous model TUBE-01 by strengthening parts and circuits such as installing a gain setting switch. There are no noticeable scratches on the exterior (Satoshi Yoneshima
Maintenance info: 2022.2.10 operation confirmed
Accessories: Instruction manual, AC adapter, original box
Main specifications: Frequency characteristics 20Hz to 35kHz W95 × H60 × D99.5mm (not including protrusions) Main body weight strength 305g
*Comes with an AC adapter sold separately! A vacuum tube line preamp from the Northflat Japan FX-AUDIO brand. The high quality sound has evolved from the previous model TUBE-01 by strengthening parts and circuits such as installing a gain setting switch. There are no noticeable scratches on the exterior (Satoshi Yonejima)
Maintenance info: 2022.2.10 operation confirmed
Accessories: Instruction manual, AC adapter, original box
Main specifications: Frequency characteristics 20Hz to 35kHz W95 × H60 × D99.5mm (not including protrusions) Main body weight strength 305g
※ It will be passed as it is inexpensive. North Flat Japan FX-AUDIO brand vacuum tube line preamp It is a high-quality sound quality finish that has evolved from the previous model TUBE-01 by strengthening parts and circuits such as the gain setting switch. (Kimiya Miura)
Maintenance Information: 2021.2.23 Operation confirmed
Accessories: AC adapter
Main specifications: Frequency characteristics 20Hz ~ 35kHz W95 × H60 × D99.5mm (*not including protrusions) Main weight 305g
An ultra-compact vacuum tube preamp. Tone control can be adjusted, which is convenient. It's the right size for your desktop and makes your system sound warm. The exterior is dull (Satoshi Yoneshima)
Maintenance Information: 2022.10.21 Operation confirmed
Accessories: AC adapter
Main Specifications: Frequency Response Range: 20Hz to 20kHz Treble Adjustment Range: ±6dB Bass Adjustment Range: ±10dB W258×D216×H66mm 560g
* There is a strong gully in the volume, but the current situation is. A Firestone Audio control amplifier equipped with a vacuum tube even if it is small, and has a separate power supply structure. The input is switched by 2 systems with the front toggle switch (Itsuro Mizushima)
Maintenance information: 2022.8.5 Sound output confirmed
Accessories: power cord, connection cord
Main specifications: Vacuum tube using input RCA2 system Sylvanian 2C51/5670 W82 × H110 × D145 mm 1 kg
*Currently sold. An ultra-compact vacuum tube preamp. The tone control can be adjusted, which is convenient. It's the right size for your desktop and makes your system sound warm. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Maintenance information: 2024.2.25 Operation confirmed
Accessories: instruction manual, AC power supply, connection cord, original box
Main specifications: frequency response range: 20 Hz to 20 kHz treble adjustment range: ± 6 dB bass adjustment range: ± 10 dB W258 x D216 x H66 mm 560 g
* This is a higher-level model produced in limited quantities that achieved improved sound quality by customizing the main internal parts and attached vacuum tubes to high sound quality parts based on the TUBE-00J currently on sale. OPA627AU made by Burr-Brown is used, and a 6J1 military high-precision sorting grade vacuum tube is included as standard, achieving significant improvements in sound quality, such as the spread of sound. (Miura Kimiya)
Maintenance information: 2023.. 6.11 operation confirmed
Accessories: AC adapter
Main specifications: small vacuum tube line amplifier vacuum tube 6J1 ✕ 2 H30mm (maximum 60 mm including vacuum tube) x W95 mm x D99 mm weight 275 g
Odeo's Kakupuri A tube bulb pre that you can enjoy the nuances of vacuum tubes while being simple. With LINE2 system switching ATT. Appearance has a feeling of use such as small scratches, dullness etc. (Asaine Chiho)
Maintenance information: 2021.11.29 Operation confirmed
Accessories: None
Main specifications: Vacuum tube 12AT7×2 W120xH145xD240mm 1.96kg (actual measurement)
The price has been reduced! 2022/5/6 Sales price 35,000 yen E80CC and E80F are used for vacuum tubes, and TANGO's N-10 and TYPE112 are used for transformers. The sound is relatively high resolution. There is a slight jerk in volume. Also, internal wiring is not connected to the AUX2 terminal. The appearance has a feeling of use such as dullness. (Nobuyuki Takahashi)
Maintenance information: 2022.5.6 operation confirmed
Accessories: None
Main specifications: TANGO N-10 112L10HI120MA used vacuum tube TUNGSRAM E80CC × 2 SIEMENS E80F × 2 W370 × D240 × H154mm 5.2kg
The price has been reduced! 2023/7/26 sales price 29,800 yen ※ Since it is cheap, it will be delivered as is. Compact vacuum tube preamp. Simple configuration of a single-stage negative feedback circuit. You can easily get the warm tone unique to vacuum tube preamps. It is suitable for making small speakers sound quietly. The exterior is dull and has small scratches (Satoshi Yonejima)
Maintenance information: 2023.7.26 Operation confirmed
Accessories: power cord
Main specifications: National 7308/EI88cc × 2 W350 × D200 × H56 mm 1.3 kg
* Because it is inexpensive, it will be delivered as it is. A compact tube preamp kit with a simple configuration. The bouncy and straight sound quality is not thought to be small. In addition to the line with volume and balance control, the phono can also be switched between MM/MC (Yuki Yamato)
Maintenance information: 2021.11.8 Operation confirmed
Accessories: Power cable
Main specifications: Vacuum tube/FET (signal system) 6189W (12AU7) × 3, 2SK170 × 4 Input terminal PHONO × 1 (MC/MM is switched with a switch on the rear panel), LINE × 2, TAPE (MD) ) × 1 W130 × H125 × D248mm (including protrusions) Weight 1.8 kg