To navigate click the blue buttons on the amplifier

Quad 44 Preamplifier

This particular unit is a must if, like me you like to try out different components within your hi-fi system, as it was specifically designed by Quad in such a way that settings can easily be adjusted by the user.
Quad stated in the literature of the day that; ‘If everything were perfect, a control unit would consist of a volume control and a programme selector switch. Unfortunately this is not the case. Today’s music listener is faced with two major problems, how to ensure that his choice from the myriad range of pickup cartridges, tape recorders, radio tuners and microphones is correctly terminated by his amplifier; (a recent but by no means exhaustive guide lists 165 stereo pickups, 162 cassette decks, 44 open reel tape recorders, 115 radio tuners, 190 microphones, to say nothing of add-on equalisers, expanders, noise suppressors, etc); and how to cope with the problems of loudspeaker/room and programme/room interactions which become increasingly apparent with the steady improvement in the technical quality of programme material.’






The 44 has five inputs in total, all of which are activated by buttons on the left hand side of the fascia panel. The inputs consist of Disc (Vinyl), Tape 1 and 2, Radio and Auxiliary, which are in fact interchangeable modules. What this means is, that by removing a couple of screws, the modules can be removed and replaced, so that any combination of inputs can be obtained, with options for moving coil pickup, and more recently the CD module. Interestingly too, when the CD module is obtained from Quad, they also provide a replacement fascia panel button marked ‘CD’ which can also be easily changed.

Tone controls

The tone controls consisting of Tilt, Bass and Filter, which enable the user to correct for those acoustic problems, which are amenable to frequency response shaping. According to Quad, the performance of the Quad 44 meets the simple Quad criterion, that programme fed through the unit shall suffer no audible degradation, in other words, with the filter switch in the Cancel position there shall be no audible difference between the programme at the input to and output from the Quad 44, when compared at idetitical levels. This is true for all inputs when used with their specified sourceimpedances and within their specified input signal limits.

The Quad 44 will sound no better, or worse than the programme fed into it. Used intelligently, these controls can improve the results obtained from almost any programme to amplifier level and permits the listener to adjust and apply tonal correction.
The Tilt control has the effect of gently shifting the tonal balance, about a centre frequency of 1 kHz. The operation of the control is self evident and the result is subtle but effective. A notch clockwise and an over bright recording/listening room will sound more natural and vice versa.
The Bass control has two functions; Lift when it can be used to boost the low frequency response of small loudspeakers, where the operation is smooth and progressive, and Step to attenuate bass output when it operates as a filter giving a 5dB drop at two frequencies. The step filter is designed to remove the 'honk' which characterises so many loudspeaker/listening room combinations, particularly when the loudspeakers have to be placed close to the floor or walls.
The filter remains an essential tool for removing unwanted by-products from programme in the upper frequency range without impairing the musical content and the Quad 44 retains the Filter system used on its predecessors, the Quad 22 and 33, having a constantly variable slope with three operating frequencies. The Cancel position of the filter switch bypasses the Filter and Tilt and Bass controls.

Playing your records
Now that Vinyl is making a come-back, and records are being produced again, many hi-fi enthusiasts find that their modern equipment is not designed for vinyl, and requires them to purchase an external Head Amp that will match their cartridge before they can play a record again. But despite the advancements in digital technology, where the CD is now firmly established, the Quad 44 has no problem fitting into today’s system, which goes a long way to demonstrate how advanced the thinking behind the 44 really was, where it can easily embrace new technology, and at the same time still provide the user more than a stand alone input for vinyl. The Disc (Vinyl) input has three sensitivity settings and can either be purely resistive or provide extra capacity if required to match the load requirements of a particular cartridge, selected by DIP switches accessible through a small access panel on the top of the unit.The Disc input is designed to provide an exact inverse of the RIAA recording characteristic. When the correct sensitivity setting is chosen, the dynamic range of the programme is optimised in relation to the input noise level and the input cannot be overloaded. Performance of the Disc input is totally unaffected by the source impedance of the cartridge. A high pass filter is incorporated to remove spurious signals below 20Hz. Input to Disc is via either a standard 5 pin Din or phono sockets.

Page 1 2

Page copy protected against web site content infringement by Copyscape