INTRODUCING THE AMP13 AMP CARD, WHICH GIVES YOU ACCESS TO A WIDE RANGE OF MUSICAL PREFERENCES

iBasso is well known for creating reference-level DAPs that have served as industry standards. The design and aesthetics are a tribute to the engineers at iBasso that bring us products that go through rigorous research and development before being released to consumers. iBasso has released the AMP13 AMP card, which is in its own right a superior AMP card and provides functionality that improves the performance of DX300 and DX320. Three multi-turn potentiometers on the AMP13 board are manually calibrated and matched by engineers with an AP audio analyzer to get the Nutube's best performance. The AMP13 blends a crisp, extended upper frequency with a compelling sound for your musical enjoyment.

ADVANCED CIRCUIT DESIGN FUSED WITH 3CH 6TH GEN KORG NUTUBE DELIVERING AN ENGAGING AND A UNIQUE VACUUM TUBE SOUND

The AMP13 by KORN and Noritake is a work of art in and of itself; the 6th GEN Nutube functions just like a traditional triode vacuum tube and produces rich overtones. By completing voltage amplification through the vacuum Nutube, the AMP13 achieves outstanding linearity and a compelling sound. The Nutube offers significant power savings, compactness, and quality enhancements over a conventional vacuum tube. To achieve an output power, two steps of amplification are necessary; The AMP13 features a dual 3.5mm single-ended output architecture with low noise tube output and maximal output concurrently. This design makes it possible to have a higher output power and a more stable tube signature.

AMP13 DELIVERS A STABLE TUBE SIGNATURE AND HIGHER OUTPUT POWER WITH LOW NOISE TUBE OUTPUT AND MAXIMISED OUTPUT SIMULTANEOUSLY

The AMP13 uses a voltage amplifier called a Nutube 6P1 to produce low noise tube output and maximise output. Digital volume control and current amplification come next. The low noise tube output is the output after the first amplification stage. Although the output power is not high using this design, the Nutube has a more stable tube sound signature; and excellent noise control (2.5Vrms). The AMP13 output passes through a first-stage Nutube amplifier, followed by a secondary amplification. With this, the AMP13 has a higher voltage and current output capability, resulting in better driving capability for headphones and IEMs (4.1Vrms). Because of this design, there is still headroom to power up your headphones and IEMs.

AMP13 PROVIDES EXCEPTIONAL PERFORMANCE WITH ITS THREE-CHANNEL AMPLIFIER TOPOLOGY

The single-ended output of ordinary players generally only has left and right dual-channel amplification. On the AMP13, iBasso uses three-channel amplification with the Nutube 6P1, which has the same characteristics with rich overtones as conventional triode vacuum tubes. The noise floor is minimal, and dynamics are enhanced when the output ground signal is amplified by the OPA1622, bringing Nutube's performance levels to their peak. The AMP section of the DX320/DX300 has its battery power, which is perfect for the AMP13 because it utilises two pieces of high-performance DC-DC chips from Linear Technology, with a total of 4 DC-DC power supplies. One DC-DC is 1.8V for the cathode through a low-noise LDO, one is 21V for the anode of Nutube, one is +8V, and one is -8V, which constitutes the 16V voltage swing that feeds the OPAMPS.

HIGH-PERFORMANCE DC-DC CHIPS TAKES THE PERFORMANCE OF YOUR DAPs TO ALL-NEW LEVELS

The AMP section of the DX320 and DX300 have their battery power, which is the ideal configuration for the AMP13. The AMP13 is an AMP card with strict power supply requirements, which is perfect when you pair it with your DX320 and DX300 DAPs. The AMP 13 utilises two pieces of high-performance DC-DC chips from linear technology, with a total of 4 DC-DC power supplies. One DC-DC is 1.8V for the cathode through a low-noise LDO, and the other is 21V for the anode of Nutube. One is +8V, and the other is -8V, which constitutes the 16V voltage swing that feeds the OPAMPS. The AMP13 inherited from the AMP9 adopts the Toshiba 2SK209 field effect transistor as the Nutube signal output buffer. The signal grounding and shield grounding are separated to prevent noise interference and deliver distortion-free audio. The topology also includes a dedicated JRC ultra-low noise volume control which reduces the noise floor when listening at low volumes or in quieter recordings that enhances transparency.

PS: AMP13 is compatible with the DX320 and DX300. You need to update the firmware to the latest version to have optimised support of the AMP13.