Heed Obelisk SI MK11 Integrated amplifier


Reg. price £1,290.00

Price includes VAT

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The 21st century Obelisk 'si' (mkII) integrated amplifier features five line inputs, remote volume control, a substantial power supply (which can be further enhanced by the Obelisk 'x2' outboard power supply), and the ability to accept either optional phono stage or DAC modules.

Technically speaking, the Obelisk 'si' (mkII) defies conventional measurement - mere specifications can be wildly misleading here. Consider output power: the Obelisk 'si' (mkII) is conservatively rated at 35 watts per channel into 8 ohms. While this represents a humble enough watt/cost ratio, here 35 watts don't exactly equal 35 watts, since the Obelisk's non-DC-coupled design behaves rather more akin to valve amplifiers of similar rating. With this kind of power on board, better valve amps are capable of astonishing dynamic authority, and we're more than satisfied that the Obelisk 'si' (mkII) adheres to this paradigm and more.

The type of power amplifier design used by Heed Audio in the Obelisk is rarely seen these days and I can confirm it does lend the amplifier all of the characteristics outlined above. The amplifier is capable of great dynamic swings that defy the modest power output rating and it has a wonderfully judged top end with just enough "bite" to keep things interesting. I particularly liked the way vocals were presented and the flexibility to add a good quality phono stage and D to A converter, though sadly not at the same time!

Frequency Response                               10Hz - 60Khz (<0.1% THD)

Input Impedance                                        10 Kohms

Input Sensitivity                                           500mV

Power 8/4ohms                                          35/60w per channel 50/80w with X2 Power Supply

Signal to Noise Ratio (A Weighted)        96dB

Max Power Consumption                         160W

Weight                                                          6kg

Dimensions(W x H x D)                             22 x 8.5 x 36cm

Finishes                                                       Gloss Black or White

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