SKU: 5146795268

SPL PHONOS DUO RIAA Phono Preamplifier (Silver)

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Description

SPL PHONOS DUO RIAA Phono Preamplifier (Silver)Great design a must have Visually, the SPL Phonos duo Phono Preamplifier fits perfectly into the SPL HiFi line Professional Fidelity and is of course available in the three basic colors black, red or silver. MM & MC There are two cartridge systems for turntables: Moving Magnet (MM) and Moving Coil (MC). Moving Magnet Moving magnet cartridges generate a voltage by moving a magnet between copper coils. In order to achieve the best possible linearity of

Great design – a must have
Visually, the SPL Phonos duo Phono Preamplifier fits perfectly into the SPL HiFi line Professional Fidelity – and is of course available in the three basic colors black, red or silver.

MM & MC
There are two cartridge systems for turntables: Moving Magnet (MM) and Moving Coil (MC).

Moving Magnet
Moving magnet cartridges generate a voltage by moving a magnet between copper coils. In order to achieve the best possible linearity of the frequency and phase response, the capacitance is modified to adjust the cartridge. Phonos duo offers six different capacities for this adjustment: 12 pF, 47 pF, 100 pF, 150 pF, 220 pF und 330pF

Moving Coil
The moving coil cartridge is also a small electromagnetic generator. However, the magnets are firmly anchored – and the coils move between the magnets. This concept is exactly the opposite of the moving magnet cartridge. Consequently, it is not the capacitance but the impedance that is the decisive parameter in matching the cartridge. Phonos duo offers six different impedances for this adjustment: 20 ohms, 50 ohms, 100 ohms , 220 ohms, 500 ohms and 1 kohm.

MC or MM ?
Moving coil cartridge systems are commonly regarded as the more audiophile systems, as they allow a faster and therefore a finer cartridge due to their low mass. They bring out the fi nest nuances of the record. The output voltage of a moving coil cartridge system is extremely low at just a few hundred microvolts and is therefore more sensitive to noise and induced hum.

The very low output voltage makes preamplifier design a challenge, because it has to be pre-amplified extremely noise-free. With up to 70 dB preamplification, Phonos duo offers one of the most powerful phono preamplifiers for moving coil systems. Thanks to SPL 120V technology, Phonos duo amplifies extremely low-noise, linear and phase-locked.

Moving coil cartridges have a very low inductance and impedance.
This means that the effects of cable capacitance (from the cartridge to the preamplifier) are not that significant. The impedance, however, is the relevant parameter here and can be set in six positions on the Phonos duo. The manufacturers specify the impedances of the cartridges. These should be followed as closely as possible.

Moving magnet cartridges, on the other hand, are more rugged and often less expensive.
The greater mass of the moving magnets causes more inertia, which results in less precise reading of the record. However, modern moving magnet systems also use neodymium magnets, which have a significantly lower mass. Such moving magnet systems can also keep up with some moving coil systems in terms of accuracy.

Capacitance plays a significant role with moving magnet cartridges.
This means that the effects of cable capacitance (from the cartridge to the preamplifier) can‘t be ignored here. The capacity for moving magnet cartridges can therefore be set to six values on the Phonos duo to be optimally adapted to the system.

Tipp: If there is any doubt as to which capacitance corresponds to that of the cartridge, simply switch through the capacitances on the Phonos duo. As long as the high frequency range increases, the capacitance is lower than that of the cartridge. If the high frequency range reduces again, the capacitance is higher than that of the cartridge.

Free choice – balanced or unbalanced
Phonos duo offers two pairs of stereo inputs and outputs. A pair of balanced inputs and outputs with XLR inputs and outputs and a pair of unbalanced inputs and outputs with RCA connectors.

The INPUT switch on the front of the Phonos duo can be used to switch between the two stereo inputs

The output signal is always present in parallel at both output – regardless of the selected input

Connections
Gold-plated RCA sockets are available for connecting the turntable and for outputting to a preamplifier such as the Director Mk2 or the Elector.

A ground connection for the turntable is designed as banana plug socket. The ground lead can be either clamped or plugged in.

Phonos duo also features a switch on the rear panel labeled GND LIFT. This ground lift function can be used to eliminate ground loops by isolating the internal ground from the housing ground when the switch is pressed.

Perfect level
The GAIN switch can be used to set the pre-amplification, i in other words the output level of the Phonos duo. There are three values to choose from.

In the “Low” position, the amplification for MM systems is +30 dB and for MC systems +50 dB. This is ideal in combination with standard HiFi devices that operate with a reference level of -10 dBV In switch position “Med”, the amplification is increased by 10 dB (MM = +40 dB, MC = +60 dB). If the switch is in the “High” position, the gain is increased by a further 10 dB (MM = +50 dB, MC = +70 dB). This means that the output level is approximately as loud as that of modern DA converters at a reference level of 0 dBfs = 15 dBu.

Rumble
The rumbling of the turntable‘s drive mechanism is amplified by the high amplification of the bass range due to RIAA equalization in playback (see RIAA equalization). The Phonos duo offers a switchable subsonic filter to remove this rumble.

Mono
The MONO switch can be used to select whether the stereo input signal should be output as a regular stereo signal or summed to mono (switch in the On position). This is useful, for example, when using a mono system to play mono records.

Mute
The MUTE switch can be used to mute all outputs.

On
The Phonos duo can be switched on with the ON switch (switch is in the upper position).

Sounds good
With all devices of the Professional Fidelity series we develop not only according to plan, but also by ear. Many important components are installed on the circuit boards using Through-hole technology. This way we can ensure that we can use the best sounding components.

RIAA Equalization
RIAA equalization is a specification for the recording and playback of records proposed by the Recording Industry Association of America (RIAA).
The RIAA equalization curves introduced a global de facto industry standard for vinyl records in 1954.

RIAA equalization uses pre-emphasis to reduce low frequencies and boost high frequencies when the record is cut (blue RIAA curve).

The bass is reduced by up to 20 dB to provide more space and longer record play time.

The high frequencies are boosted by up to 25 dB to increase the signal-to-noise ratio between the noise of the record media to the audio signal.

During playback, exactly the opposite happens in the Phonos. The de-emphasis filter (red RIAA curve) compensates for the pre-emphasis and the result is a linear frequency response.

Douglas Self Design
The RIAA equalization of the Phonos was developed according to the recommendations of Douglas Self.

Idea: Many small capacities instead of a few large capacities.

Advantages: The capacitors charge and discharge faster, which results in better resolution and faster impulse response.

Only audiophile Styroflex capacitors are used in the entire RIAA equalizer. About the person: Douglas Self is a British electronics engineer with a strong penchant for audio. He holds honorary degrees from Cambridge University and teaches psychoacoustics at the University of Sussex.

Specifications

Analog Inputs & Output: XLR (balanced) and RCA

  • Input impedance (MM): 47 kΩ
  • Input impedance (MC): switchable
  • Output impedance: 75 Ω
  • Frequency range: 10 Hz–100 kHz
  • Crosstalk: -80 dBu

Moving Magnet (MM) Preamplifier

  • Amplification Low: 30 dB
  • Amplification Med: 40 dB
  • Amplification High: 50 dB
  • Capacitance (switchable): 12, 47, 100, 120, 220, 330 pF
  • Noise (A-weighted; 50 dB amplification): -82 dBu
  • Dynamic range (50 dB amplification): 132 dB

Moving Coil (MC) Preamplifier

  • Amplification Low: 50 dB
  • Amplification Med: 60 dB
  • Amplification High: 70 dB
  • Impedance (switchable): 20, 50, 100, 220, 500, 1000 Ω
  • Noise (A-weighted; 70 dB amplification): -62 dBu
  • Dynamic range (70 dB amplification): 129 dB

Internal Linear Power Supply with Shielded Toroidal Transformer

  • Operating voltage for analog audio: +/- 60 V
  • Operating voltage for relays and LEDs: + 12 V

Mains Power Supply

  • Mains voltage (selectable, see fuse chamber): 230 V AC / 50; 115 V AC / 60 Hz
  • Fuse for 230 V: T 0,5 A
  • Fuse for 115 V: T 1 A
  • Power consumption: max. 30 VA
  • Stand-by power consumption: 0,3 W

Dimensions & Weight

  • W x H x D (width x height incl. feet x depth): 278 x 57 x 300 mm / 11 x 2.24 x 11.81 inch
  • Unit weight: 3.3 kg / 7.27 lbs
  • Shipping weight (incl. packaging): 4.45 kg / 9.81 lbs
Shipping Notes
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SKU: 5146795268

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4.6 ★★★★★
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Terry Anne
Fort Morgan, US
★★★★★ 3
Only holds towels in place when it is full or 1/2 full
Color: 01-silver
If you are buying this for the feature of holding the paper towels in place so you can just rip one, I think you will be disappointed. Once the roll becomes smaller (and I tried changing the arm) the arm does not touch the towels. I do like the firm grip on the counter. My other dissatisfaction is the base gets water spots. Being near the sink this happens frequently. It does its job and is attractive.
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Reviewed in the United States on May 21, 2026
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Jay
Los Angeles, US
★★★★★ 5
Stylish
Color: 01-silver
Good sturdy stand for paper towels. Has small suction cups on bottom for stability. Good finish and good fit under the counter. Heavy base and not flimsy feeling. Brushed aluminum matched other appliances well.
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Reviewed in the United States on January 6, 2026
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The product comes in multiple colors, but the function is terrible
Carnegie, US
★★★★★ 5
Goodbye for the value
Color: 02-black
Great value looks wonderful very adorable
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Reviewed in the United States on May 31, 2026
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Jonathan Bailey
Natrona Heights, US
★★★★★ 5
Required Reading for Egyptologists
Format: Paperback
To say the very least, this book is an enlightening read. The author attempts to design a new chronology of Egypt based on a number of archaeological observations he made which pointed to certain anomolies in the standard chronology of the Third Intermediate Period of Egyptian history. The TIP is one of those points in history where information is scanty and there is much room for error in interpreting existing archaeological evidence. Rohl posits that the 21st and 22nd pharaonic dynasties were at least partly contemprary in a period of balkanization of Egypt, contrary to the conventional chronology's view that they were successive. He therefore shifts the entire preceding dynastic histories downward from 200 to 300 years. That is, what we previously though to occur at 1250 BC actually happened at 1000 BC according to Rohl. In so doing Rohl has done much to synchronize Egyptian chronology with the chronology of the bible. Rohl claims that the Amarna letters were not to be compared to Joshua's conquest of Canaan, a period where they clearly do not fit, but rather tell the tale of Saul's and David's claiming of Israel from Phillistine Egyptian vassals. He synchonizes Ramesses II's conquests of Asia Minor with the biblical invasion of Shishak. Also, he identifies the Egyptian 'Hyksos' with the Amalekites of the book of Exodus. There are many other enlightening points of connection with the bible that Rohl makes, but my point here is not to explain them all. The true value of this book for any egyptologist, student of biblical history, or any student of the ancient world at all, is this book's popular presentation of the field of archaeology and ancient history. So rare are books that actually connect a lay reader with the methodologies and evidence upon which researchers base their works. In order to show a need for a revision of Egyptian chronology, Rohl shows how the entirety of Egyptian chronology depends on all but of a handful of archaeological finds, many of them of dubious reliability. Even if Rohl's opponents find more pieces of evidence supporting the standard chronology, the number will still be very small and they will quite likely be as subject to interpretation, as are the ones that Rohl has pointed out. Rohl goes to great lengths to show the history of the observations that scholarship has made, thereby showing us where they may have gone wrong. (As a popular book, I must confess that parts of Rohl's historical narratives depict events in which one expects to find Indiana Jones) Next, when building his own chronology, Rohl puts us close to the texts and archaeological evidence upon which he bases his theories. Rohl's conclusions are in many cases impressive, but in some cases I had to shake my head and come to the conclusion that he was grasping at straws. For instance, I believe that his work in astronomical retrocalulations to find the dates of eclipses recorded in ancient texts is pretty shaky. I even doubt that the text that he is talking about is even mentioning an eclipse. This information has proved to be incredibly valuable to me, however, as I now know that astronomy based chronology, something I though would give absolute and undisputable dates, is as foggy an area of research as any. I do not know if I will eventually embrace Rohl's ideas or not, or if partially. I do know that reading this book has shown me the types of reasoning and observations that old world historians make, and can now make an informed decision about how firm our grip on dating events of the past is. My conclusion: if somebody tells you some biblical event did not happen because the dates don't line up with scientific knowledge, don't be disheartened. We have a LONG way to go before we can truly be confident about such statements, if indeed we will ever arrive at that sort of knowledge. This uncertainty that I have gained from Rohl's book is corroberated by the "Oxford History of Ancient Egypt" which provides wonderful information on Egyptian chronology. Everyone who wants to study ancient history, whether it be Egyptian, biblical, Middle Eastern, or even Chinese for that matter, should read this book, so the next time they read somewhere that 'such and such happened at 3200 BC', they will know to take that statement with a grain of salt. Whether Rohl is right or not, I am forever indebted to him for showing me how chronologists operate. Lastly, I would like to say, after all this talk about archaeology and methodology of Egyptologists, that this book is very readable and comprehensible to the lay reader. Though a smattering of knowledge of biblical and/or Egyptian history will make the book more interesting to the reader, no such knowledge is required in order to understand the book or find value in it. It is truly a popular book intended for the average interested person. I recommend it to all.
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Reviewed in the United States on February 10, 2001
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Stone Dog
Draper, US
★★★★★ 5
Exciting reinterpretation of ancient history.
Format: Paperback
In "Pharoahs And Kings", author David Rohl offers the reader a stunning new interpretation of the events of the ancient world in Egypt and the Levant. In doing so, he ties in Biblical events to their proper place in history. This is a stunning reordering of events and personalities and brings both Egyptian and Biblical history to a much closer synchronization. The book begins in Egypt where Rohl lays out his evidence for condensing the chronology of Egypt. Though we use AD/BC as a method of numbering our years, the ancients did not do so and used regnal dates ("In the third year of Pharoah So-And-So's reign, something happened."). By counting all Pharoahs and their reign lengths, historians felt they had a handle on when, according to our dating system, things happened. When they did so, they discovered the events portrayed in the Bible didn't match. When they date Solomon's reign in Israel to the Iron Age, for example, they find economic development to be poor - a far cry from the Biblical accounts of Solomon's reign as a flowering of culture and rich in trade. Likewise, Jericho's walls did not fall in the time period most historians would place the Exodus and entrance into the Levant of the Hebrews. Therefore, the Biblical accounts are simply myth, nothing more. David Rohl is a historian, not a religious believer and his point of view is as a historian. His focus is to find a more accurate timeline for the events in the ancient Middle East. He begins in Egypt because that is his area of expertise and he gives convincing arguements for re-ordering the events of Egypt. The clincher, for me, was the tombs of Tanis (among other inconsistencies in the conventional dating such as the number of Apis Bulls) in which the tomb of Psusennes I cuts into the tomb of King Oskoron II and was obviously built after the tomb of Oskoron II. The problem? Oskoron II was from the 22nd dynasty while Psusennes was from the 21st! It is quite obviously reversed! Rohl's conclusion is that two dynasties were contemporary and that about 140 years needs to be removed from the timeline of Egypt. When this is done, events in the Levant match the events in the Old Testament very closely. In the New Chronology, Jericho falls just when the Hebrews are entering Canaan according to the Bible. Solomon's Israel is now placed in the Late Bronze Age where there is evidence of prosperous cities and flourishing trade. There is evidence of mentions of both Saul and David in the Amarna Letters. This was a page turner and Rohl's work, although controversial, is backed up by fact and evidence. There is less evidence for some of his conclusions than others (in my mind), but it is well researched and never strays from a scholarly interpretation of the evidence written and on the ground. I actually enjoyed this book! David Rohl writes in a very engaging fashion, often using humor. His writing skill keeps subjects that may seem dull very frsh and exciting. He often uses humor and engages the reader, challenges the reader and forces the reader to think. This is not the usual dry tome on archeology that puts you to sleep! He assists the reader with many and high quality photos and drawings of the evidence and includes "side bars" with definitions and explanations in the margins to help the layman navigate the technical aspects of history and archeology without getting bogged down and overwhelmed. This is a fine book and more than deserving of five stars. It's a very eye-opening and interesting read that doesn't seem like a college textbook. Instead, he challenges the reader while entertaining at the same time. I recommend this book with five stars!
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Reviewed in the United States on September 29, 2012

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