GMP 435 S

Meet the GMP 435 S, the versatile open-back headphone designed to deliver stunning, high-resolution audio from virtually any source. The secret is its highly efficient, low-impedance (35 Ohm) driver, engineered to produce a dynamic and richly detailed sound even from the modest power output of smartphones, laptops, and portable players—no external amplifier required.

Sound Signature and Design

Its sound signature is exceptionally well-balanced, anchored by a tight, deep bass that remains articulate without ever overpowering the mix. True to its open-back nature, the GMP 435 S creates a wide, immersive soundstage with accurate stereo imaging. Finished with comfortable and durable synthetic leather earpads, it's the perfect companion for long listening sessions, wherever you are.

Authentic German Manufacturing

Every pair of GMP 435 S headphones is proudly designed, engineered, and assembled by our team in our own factory in Obrigheim, Germany. This commitment to in-house manufacturing ensures we meet the absolute highest standards of quality, precision, and durability.

Technical Specifications

• Headphone Type: Open-back
• Driver Type: Dynamic
• Nominal Impedance: 35 Ω
• Frequency Response: 20 – 27,000 Hz
• THD Harmonic Distortion: 0.05% (1 mW / 1 kHz)
• Sound Pressure Level (SPL): 102 dB (1 mW / 1 kHz)
• Load Rating: 100 mW
• Contact Pressure: ~3 N
• Weight w/o Cable: 240 g
• Earpads: Synthetic Leather
• Cable: Straight cable 9ft10in (3m)
• Connector: Gold-plated straight Jack 3.5 / 6.3 mm