Krell DUO 175

KRELL’s history is rich in innovations in Class A amplification that have helped build its unrivaled legacy of delivering the highest performing solid-state amplifiers. Despite its undisputed acoustic superiority, Class A had been somewhat neglected as new power consumption standards came into effect. KRELL’s engineers took on this challenge by reinventing the notion of high-performance power amplifiers. Their goal: unmatched acoustic performance, elegant design, and a series of innovative and practical new features. The result is a completely revolutionary, patent-pending iBias circuit that enables Class A operation without the excessive heat or wasted energy of conventional circuits, all housed in stunning new chassis with advanced network connectivity for access and control.

The sound of the DUO series is open and unbridled in a way that rivals a live music concert, reproducing the true sound of instruments and voices. Music and dialogue are reproduced with breathtaking richness, detail, and dynamics.

From the front panel to the speaker terminals, KRELL’s new DUO series of Class A power amplifiers fully benefits from this heritage of more than thirty years of unrivaled experience and global leadership in audio electronics. Available in mono, stereo or multi-channel configurations, these new Class A amplifiers with iBias technology take music and movie reproduction to dizzying heights. With a virtually unlimited power reserve delivered through the most sophisticated circuits ever designed, the DUO series amplifiers achieve this feat of balance between pure, visceral power and the most extreme delicacy and musical agility.

• Class A Stereo Amplifier with iBias
• Power:
  • 2 x 175W into 8Ω
  • 2 x 350W into 4Ω

Measurements

• Frequency response
  • 20 Hz to 20 kHz +0, -0.08 dB
  • 0.5 Hz to 100 kHz +0, -3 dB
• Gain: 26.2 dB
• Total harmonic distortion
  • <0.03% at 1 kHz, at 175 W, 8 Ω
  • <0.13% at 20 kHz, at 175 W, 8 Ω
• Output impedance: <0.038 Ω, 20 Hz to 20 kHz

General

• Dimensions (W x H x D): 43.4 x 19.4 x 53.6cm
• Weight: 27.3 kg