Integrated Amplifiers

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Ed Selley  |  Nov 17, 2011
The ancestor of a modern classic still has much to commend it Author of a couple of 1967-8 HFN features comparing the operation of output stages in Class A and AB transistor amplifiers, Jim Sugden then owned a company producing lab and test equipment. But thanks to a collaboration with Richard Allan, a company making speakers based nearby in Yorkshire, the first Class A amplifier made by Sugden was marketed under the Richard Allan name. The A21 amplifier made its first public appearance at the ’68 London Audio Fair in London. A 10W-per-channel integrated, it sold for £52, like Leak’s Stereo 30.
Hi-Fi News Staff  |  Dec 22, 2014
A 10W design from the final years of the valve era, the original Rogers Cadet appeared in 1958 as an amplifier and control unit combination for mounting inside a cabinet. Its stereo successor, the Cadet II, appeared in 1962 and proved equally popular. With the version III, gain was increased so that magnetic cartridges like the Shure M44 and M75 series could be used. This was achieved by the use of special ECC807 valves and an extra stage, meaning that the Cadet III control unit became slightly wider.
Ken Kessler  |  Mar 31, 2020  |  First Published: Mar 01, 1996
The loudspeaker firm, famed for its late-1950s amps, makes a late-1990s return to tube electronics with two new integrateds. Ken Kessler listens

When the grapevine alerted the world's tube crazies to the return of Rogers amplification, visions of two-tone faceplates danced before our eyes. A nice Cadet III [HFN May '13], or maybe an HG88 visually unchanged but suitably modernised. The collector in me rejoiced. But the Rogers beancounters felt that an all-new product was a more sensible proposition, which is why the E-20a and E-40a all-valve integrated amps have nothing whatsoever to do with the preceding models. Indeed, they have little to do with Rogers.

Review: Adam Smith, Lab: Paul Miller  |  Dec 13, 2019
The big beast of the budget audiophile jungle is back with two new models to beef-up its 14-series lineup. Does this affordable CD/amp combination have real teeth?

Something is afoot in the land of hi-fi separates. First we had Musical Fidelity with its M2scd/M2si [HFN Jul '19], then Cambridge Audio's AXC35/AXA35 [HFN Sep '19] and now Rotel has launched its own affordable amplifier and CD player pairing, in the form of the £429 CD11 and £599 A11.

Richard Stevenson & Paul Miller  |  Apr 06, 2009
After 45 years in business Rotel has every right to do things its own way. The new RSX-1560 gloriously raises its middle knob to the herd, eschewing games of specification trumps and symphony-length features lists. It is also thoroughly gorgeous to behold, and you can’t say that about many of today’s AV receivers. The clean fascia, sturdy case and chunky polished corner pieces give it high-end panache while the rear panel is a cornucopia of beautifully crafted gold plated terminals.
Hi-Fi News Staff  |  Dec 22, 2014
The TA-1120 stereo amplifier was a step-ahead design which combined power, quality, reliability and compactness in a way that had not been seen before, but which in a few years would become ubiquitous across the ranges of Japan’s major hi-fi brands. In 1968 the original TA-1120 was replaced by the TA-1120A, as tested here, the addition of a headphone socket and the removal of a ‘safety’ indicator light being the only obvious external clues as to which model is which. Revisions were also made to the preamplifier circuit. The main selector lever gives a choice of phono 1 (MM) or tuner, along with a central position that selects a rotary control giving four further options, eg, mic, tape head, second MM turntable and line-level auxiliary input, which can be used to connect a CD player.
Ed Selley  |  Nov 19, 2011
An innovative amplifier featuring sophisticated adjustable impedance matching. From the outside at least, what we have here is an integrated amp seemingly conventional in most respects, though its dimensions are just 440x80x410mm (whd) meaning it takes up no more shelf space than would a small turntable.
Review: Jonathan Gorse, Lab: Paul Miller  |  May 11, 2020
hfncommendedAs T+A's midrange E series is reinforced by a new amplifier, based on the PA 1000 E but equipped with BT and a USB DAC, we ask 'is this now the stereotype for modern amps?'

As the latest in a long line of amplifiers from the German brand, T+A's PA 1100 E integrated is also one of the more innovative and comprehensive in its scope. The company (T+A stands for 'Theory and Application') has been manufacturing audio equipment since 1978 and prides itself on both its deep technical capability and in-house manufacturing. However, despite this heritage, the PA 1100 E is only the first of its amplifiers to include an onboard DAC – something very many competing brands have been doing for years.

Hi-Fi News Staff  |  Nov 18, 2014
Germany’s T+A has spent the last couple of years developing a completely new range of all-solid-state electronics: its ‘HV Series’. Built into an all-aluminium case, the PA 3000 HV amplifier’s individual sub-assemblies are screened in separate chambers. An upper compartment houses the preamplifier and voltage amplifier stages, while the electronic control processor and circuitry for driving the display screen – fed by a separate power supply arrangement – sits in a recess machined out of the 40mm-thick aluminium front panel. A 10mm-thick dividing wall shields the top section from the left/right current amplifier stages and the unit’s massive power supply is in a lower compartment.
Review: Andrew Everard, Lab: Paul Miller  |  Apr 18, 2019
hfncommendedThe latest addition to the Italian manufacturer's range is said to be a ground-up design to make the most of its hybrid – valve preamp, solid-state power amp – configuration

Based in Treviso, Italy, Unison Research has long specialised in making very traditional looking tube amps with polished wooden chassis and rows of glowing bottles on display. At the same time its Unico series has adopted a more mainstream aesthetic and includes valve-based amplifiers that, well, don't really seem like valve amplifiers. Despite an outward appearance suggesting a completely conventional integrated amp, the Due – which sells for £2500 in standard silver with black available at a £100 premium – is very definitely a valve amp, or at least half of one.

Richard Stevenson & Paul Miller  |  Apr 06, 2009
Yamaha’s Z11 is an amplifier of extremes. Almost every feature can be prefixed with terms like ‘most’, ‘advanced’ and ‘leading’ and the fit and finish is superb. The specification sheet is impressive and the features list is the size of the Encyclopaedia Britannica and reads like my very own wishlist of AV technology. The Z11 is right at the cutting edge of multichannel audio, HD video and multi-room technology and then goes on to incorporate a level of audiophile engineering that would compete favourably with high-end two-channel components.
Ed Selley  |  Nov 19, 2011
This compact valve amp is far more talented than the low price might suggest Established in 1996, Yarland is old by Chinese audio manufacturer standards. With 15 years’ experience, it is able to produce a comprehensive range of models in two quaintly-named series: Dreamwork and Yourmate. The FV-34B is part of the Yourmate range. If the unit looks familiar, that’s because it has been – unashamedly – styled in the manner of a Unison Research.
Review: Adam Smith, Lab: Paul Miller  |  Nov 13, 2019
hfncommendedBeing 'designed in France and built with passion', the IA350A integrated amplifier from YBA's Passion series promises high quality with more than a sprinkling of Gallic flair...

Agood hi-fi system should invoke 'passion' in the listener – be that an urge to crank-up the volume, to play an air guitar or wave an imaginary baton. French brand YBA knows this only too well, bestowing this particular moniker on its penultimate lineup of models. Coming in below its Statement units, but above Design, Heritage and Genesis, the six-strong Passion range also includes the PRE550/AMP650 pre/power amplifiers [HFN May '18].

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