Fiio
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The FiiO GIGAS1 is a compact, high-power desktop headphone amplifier built specifically to unlock the full potential of entry-level planar headphones and demanding full-size cans. Inspired by the Greek word “GIGAS” meaning “giant,” the GIGAS Series was born from a simple mission: deliver massive driving power at an affordable price, so you never have to compromise on sound quality.
Encased in a sleek anodized aluminum alloy chassis, the GIGAS1 utilizes a discrete Class AB transistor current-amplification circuit to deliver up to 4600mW + 4600mW balanced output — effortlessly driving everything from sensitive IEMs to low-sensitivity planar headphones.
Meticulously engineered with a discrete amplification circuit using an op-amp + transistor current-amplification design, the GIGAS1 pairs classic onsemi MJE243G / MJE253G transistors (4 of each) for high-current, low-impedance output. The result is a smooth, natural, and melodious sound with the headroom to drive virtually any headphone in your collection.
Featuring both a 4.4mm balanced and a 3.5mm single-ended headphone output, the GIGAS1 offers wide compatibility with a diverse range of headphones. The 3.5mm jack also supports CTIA-compliant microphone passthrough — ideal for gaming voice chat, calls, and multimedia entertainment.
Equipped with both a 3.5mm jack and RCA inputs, the GIGAS1 connects seamlessly to digital audio players, smartphones, computers, and CD players. Whether for HiFi music listening or desktop multimedia entertainment, it ensures a stable connection with zero limitations on your audio sources.
A mechanical toggle switch easily alternates between high and low gain settings, accommodating high-sensitivity IEMs as well as low-sensitivity planar and high-impedance full-size headphones. One amp, any headphone.
The GIGAS1 accepts both standard 5V USB power and 12V PD power, automatically adapting between modes. Powering via a computer or 5V adapter is sufficient for most headphones. Connecting a 12V PD supply fully unleashes the amplifier’s peak performance — delivering a massive leap in driving power, dynamics, and soundstage.
Available in Black, Silver, and Green, the anodized aluminum alloy chassis features vibrant colors with a premium finely textured finish. Paired with a warm retro lighting effect, the GIGAS1 blends into any desktop setup — minimalist workspace, vintage rig, or high-performance gaming station. An oversized volume knob and mechanical toggle switches make operation intuitive right out of the box.
| Specification | Value |
|---|---|
| Colors | Black / Silver / Green |
| Dimensions | 132 × 60 × 40mm (excl. feet) |
| Weight | ~210g |
| Power Input | 5V−2A (Type-C) / PD 12V−2A (Type-C) |
| Inputs | 3.5mm jack + RCA jacks |
| Outputs | 4.4mm balanced + 3.5mm single-ended (CTIA mic passthrough) |
| Headphone Amp | onsemi MJE243G ×4 + MJE253G ×4 |
| Supported Impedance | 8–350Ω |
| Frequency Response | 20Hz–200kHz (<0.4dB attenuation) |
| SNR | >118dB (A-weighted) |
| Noise Floor | <10.6μV (A-weighted) |
| THD+N | <0.00057% (1kHz / −5dB @ 32Ω) |
| 5V Power Input | |
| Balanced (32Ω) | L+R ≥580mW + 580mW (THD+N<1%, 4.3Vrms) |
| Balanced (16Ω) | L+R ≥790mW + 790mW (THD+N<1%, 3.6Vrms) |
| Single-Ended (32Ω) | L+R ≥170mW + 170mW (THD+N<1%, 2.3Vrms) |
| Single-Ended (16Ω) | L+R ≥280mW + 280mW (THD+N<1%, 2.1Vrms) |
| PD 12V Power Input | |
| Balanced (32Ω) | L+R ≥4600mW + 4600mW (THD+N<1%, 12.1Vrms) |
| Balanced (16Ω) | L+R ≥3300mW + 3300mW (THD+N<1%, 7.3Vrms) |
| Balanced (300Ω) | L+R ≥740mW + 740mW (THD+N<1%, 14.9Vrms) |
| Single-Ended (32Ω) | L+R ≥1400mW + 1400mW (THD+N<1%, 6.7Vrms) |
| Single-Ended (16Ω) | L+R ≥2200mW + 2200mW (THD+N<1%, 5.9Vrms) |
| Single-Ended (300Ω) | L+R ≥185mW + 185mW (THD+N<1%, 7.5Vrms) |
A new tariff system will take effect across all 27 EU member states starting 1 July 2026. The EU is abolishing the duty exemption for low-value parcels — all goods entering the EU will now be subject to customs duties, including a fixed duty of €3 per HS tariff code category for IOSS-declared goods under €150.
A handling surcharge of USD $5 has been applied to all standard shipments to EU countries on orders under $500. Orders over $500 qualify for free expedited shipping.
We collaborate with the following courier companies:
In the event that a shipment is refused, undeliverable, or returned to sender, HiFiCat will process a refund to the original payment method. If a customer requests reshipment, a reshipment fee will apply. A restocking fee of up to 20% may also apply.
All taxes and duties are prepaid (DDP). 5–10 working days. Free standard shipping.
Tracking examples:
Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Finland, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Cyprus
All taxes and duties are prepaid (DDP). 10–15 working days.
💰 Shipping cost: $5.00 USD (orders $0–$500) | Free (orders $500+, via DHL Express)
Tracking examples:
Norway, Switzerland, Ukraine, Armenia, North Macedonia, Moldova, Monaco, San Marino, Vatican City, Serbia, Albania, Kosovo, Montenegro, Bosnia & Herzegovina, Belarus, Georgia, Andorra, Guernsey, Jersey, Faroe Islands, Svalbard & Jan Mayen, Guadeloupe, Réunion, Gibraltar, Isle of Man, Mayotte, Iceland, Liechtenstein, Turkey
All taxes and duties are prepaid (DDP). 10–15 working days. Free standard shipping.
Main tracking portal: https://t.17track.net/
📧 Email: support@thehificat.com
📞 Tel: +8619270016096
