E&OE Copyright 2010-
Phono Stages above £500
Phono Stages below £499
The Croft Acoustics RIAA is a superb valve phono stage that uses two ECC83 dual triodes, with an all hard wired circuit that’s hand made within the UK. It’s sound is classic Croft -
Where the RIAA particularly excels is in its speed and dynamics, little things like handclaps and percussion are great examples as they are dealt with with such ease (which often isn’t the case on lesser stages), not only do they more sound realistic but the Croft is able to give you the acoustic clues around them which gives you a real idea of the reverberation of the recording venue. This naturally leads onto its imaging, which is another outstanding aspect, with the width of staging and musician placement being quite remarkable. By concentrating on these aspects perhaps makes it sound like this stage lacks musicality, but nothing is further from the truth, its timing, energy and involvement are exemplary.
As you can probably guess, I can’t recommend this phono stage highly enough for someone wanting a relatively affordable taste of the real hi end. The only caveat, like with many valve phono stages, is it likes to see a relatively high input impedance from the connected amplifier, circa 47k Ohms and upwards is recommend (thankfully this is rarely a problem with most amplifier designs).
Croft Acoustics RIAA MM phono stage: £550.00
The Phono Box RS is a very well featured MM and MC phono stage, that enables the user to adjust a multitude of settings to suit almost any individual cartridge, such is the wide scope of adjustments I have tried to list them all below. However despite the possible number of options it is actually very easy to use and we can advise on the correct settings for use with your cartridge if you are at all unsure.
On the front, you have the ability to infinitely adjust the cartridge loading from 10 to 1200 Ohms (the F/V swtich allows you to change between a Fixed values of 47K and 10Ohms or engage operation of the Variable rotary control). The RIAA/DECCA curves allows switching between these two EQ curves and there’s also adjustable gain on the furthest right switch, which is useful to correct for any level loss when running with low impedance loadings and for optimising playback levels in your system.
On the rear we have the DIP switches (the blue blocks in the centre) for adjusting capacitance (100pF minimum, with the switches adding in up to a total of 520pF) and fixed loading between 10R and 47K resistance. The toggle switches include a Subsonic filter (aka Rumble filter, which I always prefer left off whenever possible) and a switch between RCA and XLR input, as this phono stage supports full balanced use both from the arm cables and into the connected amplifier.
Naturally the huge flexibility of the RS means that you can easily dial the stage in to match your cartridge, so you can be sure that it is optimised for your setup within moments.
Sonically the RS is a very enjoyable phono stage to listen to, it has a sound that is dynamic, with well extended and resolved frequency extremes. It is tonality is slightly on the dry side but not unpleasantly so, in my experience this is of often a side effect of using switch mode power supplies like the plug top one included with the RS -
The Phono Box RS (and the optional power supply) are housed in a compact box (21cm wide, 7cm high and 21cm deep) that is beautifully finished in brushed aluminium and available in either Black or Silver finish.
Finishes: Silver or Black
Pure Sound P10
The P10 is a superb MM valve phono stage (for Moving Coil use it in conjunction with a Step Up transformer). It uses a completely hard wired purist circuit with passive equalisation and no feedback. It is cleverly made with internal divisions within the half width case to shield the noisy parts of the power supply from the audio stage and features very short signal paths. It produces an effortless sound with great tonality.
Pure Sound P10 phono stage: £729.95
The Quad 24P is an all valve phono stage with MM and MC capability, the latter by internal step up transformers. Four long life 6111WA dual triode tubes are used, each in their own shielding cans to keep noise to a minimum.
There is a variable output (for those people that want to run directly into a power amplifier) via a volume control on the fascia, and fixed outputs for more conventional setups. On the rear panel there’s the ability to adjust the overall sensitivity, making it suitable for almost all imaginable setups.
More information to follow shortly.
The RIAA R phono stage is one of the latest designs from Glenn Croft. Its circuit (shown here with its lid off) is effectively derived from the Micro 25 pre amplifier, and as you’d probably expect it features an all valve hard wired signal path with extensively regulated power supplies, fed from two toroidal mains transformers. It’s intended for Moving Magnet but can of course be used with high output MCs or standard output MCs if you use any good external step up transformer.
The performance the RIAA R achieves at this price level is incredibly impressive. It has a sound that is characterised by a feeling of enormous grip and authority (I’d wager largely due to the use of the regulated power supplies), but whilst retaining a good sense of flow and musicality. Unlike many lesser phono stages it doesn’t bleach the tonal colour of instruments, which sound very real and present. If you like your vinyl to sound life like and bold (and who wouldn’t!) then we’d highly recommend an audition.
Croft Acoustics RIAA R MM phono stage: £1,100
Audion Premier Phono
The Premier is a valve phono stage that uses 6922 tubes mounted on an aluminium half width chassis. It is a very quiet MM stage which has a transparent sound that is very revealing without being overly analytical in presentation. Its midband is exactly what you’d expect of a good valve design, there’s no grain or hash, just an open and expansive sound. Naturally is also works wonderfully with step up transformers for use with moving coil cartridges.
Audion Premier Phono MM phono stage £1,149.00
Audio Note R Zero V2
The R Zero V2 is a valve MM phono stage which uses the a pair of 6112WA dual triodes and quality parts including Beyschlag resistors and Audio Note tin foil paper in oil capacitors. It is housed in the smaller Audio note chassis (approximately 2/3 standard width) and is available with either a black or brushed aluminium fascia.
Audio Note R Zero V2 phono stage: £POA at manufacturers request
Audio Note M1RIAA
The M1RIAA is an all valve MM phono stage. It uses ECC83 and ECC88 triodes in a feedback free circuit and the internal layout provides good separation and screening from the power supply and audio board (as shown below). It is available with either a black acrylic or brushed aluminium fascia.
Audio Note M1RIAA phono stage: £POA at manufacturers request
Croft Acoustics RIAA RS
The RIAA RS is the new top of the range phono stage from Glenn Croft. It’s housed in two of the standard sized Croft cases, one of which contains the massive valve regulated power supply and the other the phono stage itself. More details to follow soon.
Croft Acoustics RIAA RS phono stage: £2,200
Audio Note M2RIAA
Housed in the same case as the M1RIAA mentioned above, the M2RIAA features a 6X5 rectified and ECL82 regulated valve power supply. The audio stage features Oil coupling capacitors and naturally uses Audio Notes own copper wiring throughout. It is available with either a black acrylic or brushed aluminium fascia.
Audio Note M2RIAA phono stage: £POA at manufacturers request
Audio Note M3RIAA
At the heart of the M3 RIAA is an exceptionally fine Moving Magnet phonostage which uses three 5670 valves. This is followed by a 5687 valve equipped output stage, and both sections are powered by their own dedicated 6X5 valve rectified power supply based on the M10‟s Galahad PSU. These power supplies also incorporate an ECL82 for voltage regulation and a 5651 as a voltage stabiliser.
Audio Note (UK) Copper wiring, a mix of Beyshlag and AN(UK) tantalum resistors, SILMIC capacitors and Audio Note (UK) copper foil signal capacitors are used throughout the circuit, along with in-
Audio Note M3RIAA phono stage: £POA at manufacturers request
Audio Note M5RIAA
The M5 RIAA uses three GE 6072a / 12AY7 valves around the EQ circuit (in the screening cans in the bottom right of the picture above). This is followed by a 5687 output stage (top right), which drive the output transformers (top right). Both channels are powered by their own dedicated 6X5 valve rectified power supply based on the M10‟s Galahad PSU. These power supplies also incorporate an ECL82 for voltage regulation and an OB2 as a voltage stabiliser, these are in the middle of the picture above. Two substantial mains transformers and a pair of chokes ensure it remains dual mono throughout.
Audio Note Copper wiring, tantalum resistors, Kaisei capacitors and copper foil signal capacitors are used throughout the circuit, along with in-
Audio Note M5RIAA phono stage: £POA at manufacturers request
Audio Note M6RIAA
At the heart of the M6 RIAA is an exceptionally fine Moving Magnet phono stage which uses three 5670 valves. This is followed by a 7044 equipped output stage, and both sections are powered by their own dedicated 6X5 valve rectified power supply
based on the M10?s Galahad PSU. These power supplies also incorporate an ECL82 for voltage regulation and an 5651 as a voltage stabiliser. Audio Note (UK) Copper wiring, Audio Note (UK) 1 Watt Tantalum resistors, SILMIC capacitors and Audio
Note (UK) copper foil signal capacitors are used throughout the circuit, along with in-
Audio Note M6RIAA phono stage: £POA at manufacturers request
Audio Note M8RIAA
At the heart of the M8 RIAA is an exceptionally fine Moving Magnet phono stage which uses three 5670 valves. This is followed by a 6463 equipped output stage, and both sections are powered by their own dedicated 6X5 valve rectified power supply
based on the M10‟s Galahad PSU. These power supplies also incorporate an ECL82 for voltage regulation and a 5651 as a voltage stabiliser. Audio Note (UK) Silver wiring, Audio Note (UK) 2 Watt Tantalum resistors, Black Gate capacitors and Audio Note
(UK) Silver foil signal capacitors are used throughout the circuit, along with in-
and for the secondaries which facilitate both single ended and balanced outputs.
Audio Note M8RIAA phono stage: £POA at manufacturers request
Audio Note M9RIAA
The current ultimate phono stage from Audio Note. As you’d expect at this level the design and component quality are about as extreme as possible.
The EQ circuit uses what Audio Note dub as their “Virtual Component” design, where a specially wound Nickel-
This is combined with Silver foil capacitors a Philips SQ E80F input valve and an E80CC is used for the following stage, all hard wired onto the phenolic treated wood boards, as seen on all top Audio Note products. The result is an flat RIAA response (within +/-
The sophisticated valve rectified and regulated power supplies fill a second chassis and are connected via umbilical cables to the box containing the actual stage itself.
Audio Note M9RIAA phono stage: £POA at manufacturers request