Heed Questar phono pre-amplifier

Heed Questar phono pre-amplifier

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Part Number:Questar
  • Inputs:1 x stereo RCA
  • Output:1 x stereo RCA
  • Frequency response:20Hz – 20kHz
  • Input sensitivity:220 µV (MC), 3 mV (MM)
  • Input impedance:100 Ohm (MC), 47k Ohm (MM)
  • Gain:64dB (MC), 42dB (MM)
  • Dimensions (h x w x d):9.5 x 7.5 x 22cm

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Cartridge type
Power supply

Feature:

MC or MM preamplifier

Feature:

Discrete bipolar transistor circuits

Feature:

New improved in-line power supply

Feature:

Upgradeable power supply options available

The Questars are the best entry-level options of the Heed modular line for vinyl reply. Under the hood of their hefty, shielded steel chassis beats the heart of the Quasar MM/MC phonostage, conveniently divided into neatly-specialized a’ la carte portions.


The Questar MC deploys a streamlined version of the Quasar’s MC stage, eliminating the need for jumper switches by optimising the amplifier to suit the 300-600 µV/100 Ohm output range characterising the vast majority of today’s moving coils. Considering its generous 18 dB headroom, ideal cartridge matching is virtually assured. The Questar MM largely incorporates the Quasar’s unsurpassed MM circuitry.


The internal construction of the Questars meets the most critical high-end standards in every respect. The amplifier employs an entirely dual-mono configuration and uses a two-stage – passive/active – RIAA equalisation. Gain adjustment has been optimised for maximum headroom and highest signal-to-noise ratio. Component parts are selected to exacting tolerances matching those of the Quasar.


The Questars are suitable for any line-level amplifier input, and can easily drive virtually any length of interconnect. There is no internal wiring or binding, and all high-current parts of the circuit are shielded. Both models feature gold-plated RCA terminals soldered directly onto the PCB, limiting all signal paths to a bare minimum.


The Questars (both MC/MM) now utilise a new improved external power supply to avoid undesirable electro-magnetic interference within the chassis. This new Heed X-PSU 30 is a simple but vital part of performance improvement from the previous incarnations, and represents another example of how Heed take time and care to adapt and enhance their products continually.


Sonic performance can be even further enhanced by upgrading to the Quasar's substantial separate box 'Q-PSU', constructed around a massive 60 VA toroidal transformer with low-density magnetic field and minimal dispersion. With substantial 40,000 µF capacitor filtering, the 'Q-PSU' can feed the QUESTAR'S circuitry with the kind of super-clean current usually delivered only by battery-based supplies, even with extreme dynamic swings.


Available in MC or MM variants and with upgradable power supplies.

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