Manley’s New MAHI 40 Watt Monoblock Tube Amp is Now Shipping

Esoteric tube gear manufacturer Manley Laboratories has begun shipping the new MAHI monoblock amplifier. The MAHI is an update of the EL84-tube-based 50 watt monoblock design Manley has been producing under one name or another since 1993.

This latest revision comes in all-new styling, looking like a mini version of Manley’s Snapper 100 Watt mono amp. Conceptually (and electronically) however, the MAHI is a mono version of the Stingray stereo amp introduced last year.

"They are so cute," says Manley Labs CEO EveAnna Manley of the new MAHI mono amp, which features Triode/Ultra-Linear mode switching, and high energy B+ rail capacity

Like the Stingray, the new MAHI can be switched between ultra-linear operation (40 Watts) and triode mode (20 Watts). It is designed around a quartet of EL84/6BQ5 tubes, driven by a 6414 dual triode driver and a 12AT7WA input dual triode.

“The Ei Yugo EL84 has been one of our very favorite tubes for many years,” says Manley CEO EveAnna Manley. “They are extremely long lasting and reliable, and can be considered the smaller brother of the much-beloved EL34: really quick-sounding both in the bass and especially in the top end. And of course this has a lot to do with our Manley Output transformer, the same one we build for the Manley Stingray.”

Another key design feature is the MAHI’s increased B+ rail capacity. The earlier Manley 50 watt monoblocks had around 49 Joules of energy storage in the B+ rail. Now the MAHI’s have nearly 180 Joules of energy storage, and you can hear this improvement especially in the bass region: tighter, faster, deeper.

The Manley MAHI monoblocks are now available with a suggested retail price of $2500 (US) per pair.

Manley MAHI Features and Specifications

  • Vacuum Tubes: 4 x EL84 Output, l x 12AT7WA Input, 1 x 6414 Driver
  • Output Power: 40 Watts
  • Freq. Response +.5 dB: 10 Hz – 90 KHz
  • Input Sensitivity: 460 mV nominal
  • Input Impedance: 100 Kohm
  • Load Impedance: 5 ohm
  • S/N Ratio @50W: -80 dB
  • Dynamic Range: 86dB
  • Power Consumption: 100 Watts (idle)
  • 168 Watts (Full Power)
  • Dimensions: W=12″, D=10″, H=5″
  • Shipping Weight: 17 Ibs. each

Manley Laboratories Web Site

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