Rumored to be around $84,000 with only 10 units made.
From the site:
The voltage amplification stage utilizes the SRPP circuit with ECC83S tubes, while the current amplification stage employs TA-300B tubes to drive the LL2765AgAM output transformer. The circuit design incorporates the use of the high-quality components available.
These include the input transformer LL1532 and the output transformer LL2765AgAM made with special Amorphous Core and silver wire from Lundahl Transformers. TA-300B vacuum tubes were carefully selected by Takatsuki Electric Industry specifically for headphone amplifiers, premium audio resistors with exceptional heat dissipation properties from Amtrans Corporation, and specially designed power transformer for this unit by Someya Denshi, as well as selected vacuum tubes such as ECC83S-gold and GZ34S from JJ ELECTRONIC. Each component has been carefully selected for its superior performance.
All input switching and output transformer switching are achieved through sealed relays, ensuring durability and stability. The use of relays also enables the optimization of signal flow for enhanced performance.
The Narukami Headphone Amplifier employs a fully balanced drive design. The four ECC83S tubes in the front stage amplify the signal using a "Shunt Regulated Push-Pull" circuit design known as SRPP, providing strong drive to the four TA-300B tubes in the rear stage. This design achieves a refined amplifier circuitry.
When using balanced inputs, the signal is directly sent to the left and right balanced circuits. When using line inputs, the signal is converted to a balanced signal through the LL1532 input transformer before being sent to the left and right balanced circuits. This balanced conversion circuit exhibits rich harmonics and dynamic range, further enhancing the distinctive sound characteristics of vacuum tubes and delivering clear and high-quality audio reproduction.
The circuit design of the NARUKAMI Amplifier features a luxurious configuration with four circuits, each consisting of a balanced arrangement of HOT and COLD sides for the left and right channels.
The current supplied to the left and right audio signal circuits is sourced from dedicated power transformers, ensuring stable and pure current delivery. This design achieves high separation and low noise, resulting in transparent and rich sound quality. With such a design, the NARUKAMI Headphone Amplifier achieves exceptional music playback capabilities, aiming to satisfy even the most discerning audio enthusiasts.
https://www.audio-technica.co.jp/narukami/en.html
From the site:
The voltage amplification stage utilizes the SRPP circuit with ECC83S tubes, while the current amplification stage employs TA-300B tubes to drive the LL2765AgAM output transformer. The circuit design incorporates the use of the high-quality components available.
These include the input transformer LL1532 and the output transformer LL2765AgAM made with special Amorphous Core and silver wire from Lundahl Transformers. TA-300B vacuum tubes were carefully selected by Takatsuki Electric Industry specifically for headphone amplifiers, premium audio resistors with exceptional heat dissipation properties from Amtrans Corporation, and specially designed power transformer for this unit by Someya Denshi, as well as selected vacuum tubes such as ECC83S-gold and GZ34S from JJ ELECTRONIC. Each component has been carefully selected for its superior performance.
All input switching and output transformer switching are achieved through sealed relays, ensuring durability and stability. The use of relays also enables the optimization of signal flow for enhanced performance.
The Narukami Headphone Amplifier employs a fully balanced drive design. The four ECC83S tubes in the front stage amplify the signal using a "Shunt Regulated Push-Pull" circuit design known as SRPP, providing strong drive to the four TA-300B tubes in the rear stage. This design achieves a refined amplifier circuitry.
When using balanced inputs, the signal is directly sent to the left and right balanced circuits. When using line inputs, the signal is converted to a balanced signal through the LL1532 input transformer before being sent to the left and right balanced circuits. This balanced conversion circuit exhibits rich harmonics and dynamic range, further enhancing the distinctive sound characteristics of vacuum tubes and delivering clear and high-quality audio reproduction.
The circuit design of the NARUKAMI Amplifier features a luxurious configuration with four circuits, each consisting of a balanced arrangement of HOT and COLD sides for the left and right channels.
The current supplied to the left and right audio signal circuits is sourced from dedicated power transformers, ensuring stable and pure current delivery. This design achieves high separation and low noise, resulting in transparent and rich sound quality. With such a design, the NARUKAMI Headphone Amplifier achieves exceptional music playback capabilities, aiming to satisfy even the most discerning audio enthusiasts.
https://www.audio-technica.co.jp/narukami/en.html