Kronos AV
About
Heed Audio
Creating something is a wonderful feeling. To witness the numerous pieces of electronic and mechanical parts being hand crafted to form a complete working device is delightful. Every single component receives exacting attention and is the perfect element to provide you with an unrivalled musical experience.From the hand soldering of the circuit boards to the fine adjustments of the volume knob, we ensure every process and incorporate only the highest quality components to make a Heed amplifier the best in class. Rigorous quality control provides the highest possible standard and reliability of our devices. Every single device meets our strict performance regulations but similar to twins, we know that each and every one produced is unique to you.

Heed Audio Obelisk PRE Preamplifier
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  • Regular price £1,475.00


The Obelisk PRE is the “command center” of the Obelisk range, a thoroughbred analogue preamplifier with the option of using one or two of its inputs for digital-to-analogue conversion by add-on DAC or MM phono modules. It is a clear-out design that we’re convinced more than holds its own against many class-leading high-end competitors.

Although rather traditional in its basic topology, the circuit design of the Obelisk PRE represents the convergence of cutting edge ideas with highest-grade components. As opposed to many preamplifiers that have “dumbed-down” internal power supplies in order to present more dramatic sonic benefits with optional auxiliary power supply upgrades, the PRE has a sophisticated and generously sized on-board power supply that is based on a top-quality transformer and high-grade capacitors, custom made to our own specifications. Nevertheless, the last ounce of the PRE’s performance can be elicited by adding the Obelisk PX power supply.

The PRE accommodates 6 inputs of which one is exclusively dedicated to the digital domain and can be used with our optional Dactil 2.1 DAC module via 75 Ohm S/PDIF or optical TOSLINK connections, while a second one will accept either a further DAC module (only via S/PDIF in this case), or our optional MM phono module for vinyl replay (sans module, this input works as standard line-level connection).

Since DAC circuits are highly prone to interferences caused by analogue circuits integrated nearby on the PCB, we provided the on-board supply environment of the DAC module with two independent supply rails using a smart „unit within the unit” solution. Furthermore, all analogue amplifying stages (including the MM phono module) are built in dual-mono configuration and fed through no less than seven fully regulated voltage supply rails.

Modules can be easily inserted into slots on the main PCB and dedicated by jumper settings. Using modules internally instead of stand-alone auxiliary units provides many advantages: absolute synergy, no external cables and plugs, shortest possible signal paths, saving unnecessary costs for external case and power supply, etc.

The two pre-out connections of the Obelisk PRE make various configurations possible. Beside traditional single power amplification, it is also possible to use two power amplifiers for bi-amping or active mode. A tape-out connection is also available for use with a recorder or a headphone amplifier.

– 5 analogue and 2 digital (RCA / Optical) inputs

– upgradeable power supply (see Obelisk PX)

– 2 optional cards (DAC or MM phono)

– independent supply rails for analogue and digital

Inputs: 5x analogue / 1x S/PDIF coaxial / 1x TOSLINK
Outputs: 2x preamplifier output / 1x Tape out
Frequency response (+0, -1 dB): 1 Hz – 105 kHz
Input impedance: 10 kΩ
Input sensitivity (for 775 mV out): 220 mV
Output impedance: < 35 Ω
Max. output level: 7.5 V
Gain: 10 dB
Headroom: 20 dB
SNR > 100 dB
Supported upgrade cards: MM phono / DAC 1.3 / DAC 2.3
Power supply options: internal / Obelisk PX
Max. consumption: 10 W
Weight: 4.5 kg
Dimensions (WxHxD): 22 x 8.5 x 36 cm
We have several deomonstation areas in both of our branches. Please give us a call on 03435236169 or email support@kronosav.com to enquire about hearing products at your local branch. 

Please always contact us before to make sure the product(s) are available

Express Deliveries

Express Delivery is FREE on all orders over £50. Express Delivery offers delivery in 24-72 hours from time of purchase. We use premium couriers for this service, mainly DPD & Royal Mail. DPD will offer you a one hour window for delivery to make sure someone is at home, or you can reschedule the delivery if no one is around. 

Standard Deliveries

Here at Kronos AV, we have vast experience with e-commerce sales. Making sure that your parcel arrives undamaged is a huge priority for us. That’s why at Kronos AV, we only use premium couriers for all our orders. All our parcels are shipped with DPD or Royal Mail and are always sent Signed For to make sure it gets to the right person. 

If for any reason your parcel does arrived damaged, please get in touch, and we will be happy to get everything resolved for you. We are always on hand to help!

Details

Delivery is FREE on all orders over £50. In order to offer FREE delivery to UK customers, we use several premium couriers to ensure your delivery arrives safe.

Most large orders (over 2kg) ship using DPD or DHL courier and smaller orders (under 2kg) by Royal Mail signed for services.

The most appropriate courier will be chosen for the items ordered to ensure the quickest possible delivery.

We can offer very generous trade in offers across the majority of our product range. 

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If you have any question, please feel free to call us on 03435236169 or email support@kronosav.com