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Heed Obelisk Si Integrated Amplfier

more products by Heed

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Ref. Code: heedsiint

£1,175.00 inc. VAT

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Heed Audio Obelisk Si Integrated Amplifier

 

This very first 21st century Obelisk sports 5 line inputs, remote volume control, a beefed-up power supply, stand-by facility, and the ability to accept either optional phono stage or DAC modules.
And that’s not to mention an entirely re-imagined preamplifier section based upon, and yet newly refined from Heed's innovative 2-box Luna preamp. But Heed have never lost sight of  the pivotal principles set forth by its classic predecessor; the active involvement of Richard Hay throughout the entire development of the new Obelisk range has been indispensable.


Technically speaking, the Obelisk defies conventional measurement. Mere specifications can be wildly misleading here. Consider output power: the Si 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 (roughly speaking, Richard Hay’s approach was sort of a “valve amp built with transistors”) 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 adheres to this paradigm and then some.

Technical specifications:  
Input 1. sensitivity/impedance:
Input 1. with MM phono module:
Input 2-5. sensitivity/impedance:
Power output:
Power output (with Obelisk X-2):
Signal-to-noise ratio (A-weighted):
Channel separation:
Distortion (THD, 1 kHz, 100mW):
Bandwidth:
Damping:
Pre-out:
Power consumption:
consumption (standby):
Weight (Obelisk Si):
 250 mV / 10 kOhm
5 mV / 47 kOhm
250 mV / 10 kOhm
35/60 W (8/4 Ohm, 1kHz, <0.1% THD)
50/80 W (8/4 Ohm, 1kHz, <0.1% THD)
98 dB
>90 dB
<0,08%
7Hz-60kHz (1W, 8 Ohm, -1.5 dB)
>150 (8 Ohm)
0 dBm (775 mV)/ <50 Ohm
<160 W
5 W
7 kg

 
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