O Fosi Audio SK02 é um amplificador portátil de alta fidelidade que revoluciona a experiência auditiva dos seus fones de ouvido. Equipado com o renomado DAC ES9038Q2M, oferece suporte completo a DSD e PCM, garantindo reprodução de áudio com distorção praticamente imperceptível (≤0,001% a 1kHz). Com entradas USB e óptica versáteis, o SK02 se adapta a qualquer fonte de áudio, enquanto suas saídas balanceadas em 3,5mm e 4,4mm proporcionam máxima flexibilidade de conexão. A bateria integrada permite uso totalmente portátil, ideal para audiófilos em movimento. Compatível com fones de impedância entre 16 e 300Ω, atende desde modelos sensíveis até fones de alta impedância exigentes. Seu design compacto (121x51x43mm) e construção em plástico de qualidade garantem durabilidade sem comprometer a portabilidade. Certificado CE e livre de substâncias químicas prejudiciais, o SK02 é a solução definitiva para quem busca qualidade de som profissional em um formato discreto e eficiente, transformando qualquer par de fones em um sistema de áudio de referência.

SPECIFICATIONS

Bluetooth: No

Body Material: Plastic

Brand Name: Fosi Audio

Built-in Battery: Yes

Certification: CE

Channels: 2.0

DAC Model: ES9038Q2M

DSD (Direct Stream Digital): Yes

Dimensions (WxHxD): 121*51*43mm

Distortion: ≤0.001% @ 1kHz

Headphone Impedance: 16-300Ω

High-concerned chemical: None

Input Type: USB,OPTICAL

Input Voltage: DC 5V

Model Number: SK02

Output Type: OPTICAL,LINE OUT (AUDIO OUT),Balanced Out

PCM: Yes

Package: YES

Recommended Headphone Maximum Impedance: 251 - 300 Ohm

Signal To Noise Ratio: 3.5mm:120dB 4.4mm:115dB

Type: Mini Amplifier

WIFI: No

feature: USB DAC

feature2: Desktop headphone amp

frequency response: 20Hz-20kHz(±0.02dB)

Features:

*Compact Yet Powerful: The SK02 employs a minimalist and stylish design language. Despite its small size, it boasts mighty features. It supports DSD256 and PCM 32bit/384kHz high-resolution decoding, along with 3.5mm single-ended and 4.4mm balanced headphone outputs. Its robust power can easily drive wide range of headphones and IEMs with an impedance range of 16-300 ohms.

*Stunning Performance: It features a high-end ESS SABRE ES9038Q2M DAC and SGM8262 op-amps. Its excellent circuit design ensures superior parameters with a SNR as high as 120dB, a low noise floor of only 3.7μV, and an incredibly low THD of 0.001%. The 4.4mm balanced output power reaches an impressive 1100mW at 32 ohms. The exceptional high-resolution capability and pure sound quality make every listening experience an extraordinary sensory journey.

*User-Friendly Design: The SK02 requires no drivers and offers plug-and-play convenience. It integrates a big multi-functional control knob, allowing easy access to power on/off, play/pause, and volume adjustments. The unit features quick-switch buttons for high/low gain and input modes. Additionally, its colorful indicator lights enable effortless identification of the current working mode and the song's sampling rate.

*Remarkable Versatility: Supports USB and optical input, widely applicable for decoding with computers, laptops, CD players, TVs, and projectors. Not only can it function as a headphone amplifier, but it can also serve as a preamp, pairing with active speakers or an amplifier like Fosi Audio V3, ZA3, TB10D amp and passive speakers to form a desktop listening or home audio system.

*Exquisite and Durable: The SK02 is crafted from a single piece of aluminum alloy using CNC machining and a delicate sandblasting process. This not only gives it an exquisite appearance but also ensures lasting durability. In addition, Fosi Audio pledges to provide a 24-month worry-free warranty and responsive customer service to all users.

Highlight:

• Model: SK02

• Input : USB/OPT

• Output : 3.5mm Headphone, 4.4mm Headphone, 3.5MM line out/OPT

• Powe Supply:5V

• Power Input Interface: USB Type-C

• THD≤0.001% @ 1kHz

• SNR:

      3.5mm Headphone: Low Gain:116dB  High Gain:120dB

      4.4mm Headphone: Low Gain:110dB  High Gain:115dB

• Frequency response: 20Hz-20kHz (±0.02dB)

• Amp output maximum power:

        3.5MM：High Gain: 280mW@32Ω, 130mW@64Ω, 40mW@250Ω, 30mW@300Ω

                        Low Gain: 90mW@32Ω, 50mW@64Ω, 15mW@250Ω, 10mW@300Ω

        4.4MM：High Gain: 1100mW@32Ω, 550mW@64Ω, 150mW@250Ω, 120mW@300Ω

                        Low Gain: 350mW@32Ω, 180mW@64Ω, 50mW@250Ω, 40mW@300Ω

• Headphone matching impedance: 16-300Ω

• PC-USB Sampling Rate: 32Bit/384KHz DSD256

• OPT Sampling Rate: 24Bit/192KHz

• DAC Chip: ES9038Q2M

• Size (L*W*H): 4.76*2*1.69inch (121*51*43mm)

• Net Weight: 0.84lb/380g

Package Include:

• *1x Fosi Audio Sk02 Headphone Amp

• *1x 2-in-1 USB Type-A/C to Type-C Cable

• *1x User’s Manual

Notice: If you choose to ship from the Brazil warehouse, Aliexpress currently does not offer the option of collecting and paying ICMS fees on behalf of the buyer. If it is found later by the tax authorities that ICMS fees need to be paid, the buyer is responsible for paying them, and the seller will not bear the responsibility. if you mind to pay 18% of the ICMS fee, please choose to ship from China, thank you for your understanding!