SEQURE Blueson A2 4-in-1 ESC (AM32)

The SEQURE Blueson A2 is a heavy-duty 4-in-1 ESC engineered for demanding 5-inch freestyle quads, 7-inch long-range builds, and heavy-lift cinelifters. By pairing robust power delivery with customisable open-source firmware, it provides the thermal and electrical overhead required to drive high-stator-volume motors through aggressive flight envelopes without voltage sag.

Key features

• Pre-flashed with open-source AM32 firmware for granular tuning, advanced telemetry, and exceptionally smooth sine-wave motor start-ups.

• Available in ultra-high-current 65A and 70A continuous ratings to easily sustain the heavy amp draw of 28xx and larger motors.

• Dedicated high-voltage 8S variant specifically tailored for X-Class racing rigs and professional cinematography drones.

• Standard 30.5x30.5mm footprint guarantees drop-in compatibility with the vast majority of full-sized flight controller stacks.

Specifications

• Firmware: AM32

• Processor: AT32F421

• Continuous current: 65A (6S variant) / 70A (8S variant)

• Peak current: 120A (6S variant) / 150A (8S variant)

• Input voltage: 2-6S LiPo (65A variant) / 2-8S LiPo (70A variant)

• Protocols: DShot600/300/150, OneShot, MultiShot, PWM

• Telemetry: Yes

• Current sensor: Yes

• BEC: None

• Mounting pattern: 30.5x30.5mm (M3)

• Dimensions: 45.5 x 42.5 x 6 mm

• Weight: 17 g

• In the box: ESC, two SH1.0 8-pin FC cables (40 mm and 60 mm), 12AWG 100 mm power leads, XT60H male connector, 35V 680uF capacitor, 5 x M3 damping grommets

Always pair this ESC with a correctly rated low-ESR capacitor on the battery pads to filter electrical noise, guarantee clean power delivery to your flight controller, and protect the MOSFETs from inductive voltage spikes.