Audio T Verdict
The Nytech CDP132 is a compact, hand-built phono stage that concentrates on careful analogue circuit design rather than surrounding the user with rows of adjustment switches.
Its completely redesigned moving magnet section combines low-noise JFET amplification with a two-stage passive RIAA equalisation network. The equalisation does not sit within a conventional feedback loop, while the fixed 47k-ohm MM input avoids adding unnecessary capacitance simply to alter the tonal balance.
The moving coil section is more unusual at this price. Rather than sending the cartridge signal through selectable loading resistors and a conventional voltage-gain stage, the CDP132 uses a dedicated transimpedance current-to-voltage converter. This automatically responds to the electrical behaviour of a suitable moving coil cartridge and removes the need for user-selectable loading switches.
Moving magnet and moving coil operation are selected using gold-plated internal links rather than small DIP switches in the low-level signal path. Moving coil gain is set at the factory between 50dB and 60dB, so the intended cartridge should be discussed with Audio T when the unit is ordered or configured.
Our own listening at Audio T Cardiff found that the CDP132 built convincingly on the long-running CDP122, producing a larger and more precise stereo image, stronger instrumental separation and easier access to subtle musical detail.
It is not the ideal choice for someone who frequently changes cartridges and wants every gain and loading setting available from the front panel. For a properly matched MM or MC cartridge, however, the CDP132 offers a refreshingly direct and musical approach to vinyl playback.
Nytech CDP132 MM and MC Phono Stage
The Nytech CDP132 is an external RIAA phono stage compatible with moving magnet and moving coil cartridges.
It amplifies the extremely small signal generated by a turntable cartridge and applies the RIAA equalisation required to restore the tonal balance of a vinyl recording before passing a conventional line-level signal to an amplifier or pre-amplifier.
The CDP132 is the successor to Nytech's popular CDP122, but its internal circuit has been extensively redesigned rather than simply repackaged.
It is hand-built in South Wales and uses a substantial extruded aluminium case, copper-screened rear panel and Nytech's distinctive artificial-stone front panel.
This Is a Phono Stage, Not a Source Selector
The CDP132 is designed to connect one compatible turntable cartridge to a line-level amplifier input.
It does not include a volume control, headphone amplifier, USB output or additional source inputs.
- No volume control
- No digital inputs or outputs
- No Bluetooth or network streaming
- No headphone connection
- No second turntable input
- No front-panel cartridge adjustments
Why a Phono Stage Is Required
A turntable cartridge produces a much smaller signal than a CD player, streamer, tuner or other line-level source.
The bass is also reduced and the treble increased when a record is cut. This allows the groove to use space efficiently and helps reduce unwanted noise during playback.
A phono stage performs two essential jobs:
- It amplifies the cartridge signal to a usable line level
- It applies the inverse RIAA equalisation needed to restore the correct frequency balance
Without suitable phono amplification, the turntable will sound extremely quiet, thin and lacking in bass.
Compatible with Moving Magnet and Moving Coil Cartridges
The CDP132 contains separate operating arrangements for moving magnet and moving coil cartridges.
Moving magnet cartridges generally produce a higher voltage and expect a standard 47k-ohm input. Low-output moving coil cartridges generate a much smaller signal and require additional low-noise amplification.
The selected mode, factory-configured moving coil gain and connected cartridge must all be compatible.
Confirm Your Cartridge Before Ordering
Tell Audio T the exact make and model of the cartridge that will be used with the CDP132.
This allows us to confirm whether MM or MC mode is appropriate and whether the factory-set MC gain will provide a suitable match.
Completely Redesigned Moving Magnet Stage
The CDP132's moving magnet section uses low-noise junction field-effect transistors, commonly known as JFETs.
JFET devices are well suited to handling very small analogue signals because they can provide high input impedance and low noise without placing an excessive electrical load on the connected cartridge.
The circuit has been developed specifically for low-level phono signals rather than adapted from a general-purpose line-level amplifier.
Passive Two-Stage RIAA Equalisation
The moving magnet circuit uses a two-stage passive RIAA equalisation network.
In a passive arrangement, the frequency correction takes place between amplification stages rather than being wrapped around an amplifier through a frequency-dependent feedback loop.
Nytech has chosen this approach to keep the RIAA correction separate from conventional feedback-based equalisation and to maintain a straightforward analogue signal path.
The first low-noise JFET stage raises the cartridge signal before it reaches the passive RIAA network. A following stage then restores the required output level and provides the drive needed by the connected amplifier.
No Feedback Within the RIAA Filter
The CDP132 does not use the RIAA equalisation components as part of a conventional negative-feedback loop.
This removes the need for the amplifier to correct its frequency response through feedback while simultaneously handling the extremely small cartridge signal.
The result is a deliberately simple circuit whose components and gain stages can each be optimised for a specific task.
Standard 47k-Ohm Moving Magnet Loading
Moving magnet cartridges are normally designed to operate into a standard 47k-ohm resistance.
The CDP132 therefore does not provide a bank of selectable MM loading resistors.
Nytech also avoids adding user-selectable capacitance, noting that tonearm wiring and interconnect cables already contribute capacitance to the cartridge load.
Adding excessive capacitance can create a rise in the upper-frequency response rather than providing neutral RIAA playback.
Cartridge and Cable Capacitance Still Matter
The absence of adjustment does not mean that capacitance ceases to exist.
The tonearm cable, internal wiring and interconnect all contribute to the total seen by a moving magnet cartridge. Speak to Audio T if the cartridge manufacturer publishes an unusually specific capacitance requirement.
Dedicated Transimpedance Moving Coil Input
The CDP132's moving coil front end uses a dedicated low-noise current-to-voltage converter, also known as a transimpedance amplifier.
A conventional phono stage normally treats the cartridge primarily as a voltage source. The user then selects a load resistance and applies sufficient voltage gain to raise the signal to line level.
A transimpedance input instead responds to the current produced by the moving coil cartridge and converts it into a voltage for the following RIAA stage.
This type of circuit is more commonly associated with considerably more expensive phono stages.
Automatic Moving Coil Impedance Matching
The electrical behaviour of the transimpedance input removes the need for a row of selectable MC loading resistors and capacitors.
Rather than asking the user to choose between several nominal resistance values, the current-input stage responds directly to a compatible cartridge's source impedance.
This makes setup simpler, but it does not make every moving coil cartridge automatically suitable. The cartridge output, internal impedance and required gain must still be checked.
Not Every Moving Coil Cartridge Behaves the Same Way
Transimpedance inputs are generally best suited to low-output, low-impedance moving coil cartridges.
High-output moving coil models and cartridges with unusual electrical characteristics may require MM operation or a different phono-stage design. Confirm compatibility with Audio T before connection.
Factory-Set Moving Coil Gain
Moving coil gain is configured at the factory within a range of 50dB to 60dB.
The correct setting depends on the cartridge output and the input sensitivity of the connected amplifier or pre-amplifier.
A cartridge with a very low output will normally require more gain than a model producing a stronger signal.
Excessive gain can increase background noise or overload the following amplifier input, while insufficient gain can leave the system sounding quiet and lacking in dynamic range.
Gain and Cartridge Loading Are Different
Gain controls how far the cartridge signal is amplified.
Electrical loading describes how the phono input interacts with the cartridge generator. The CDP132's MC circuit manages loading through its transimpedance design, while the required gain is selected separately at the factory.
Gold-Plated MM and MC Selection Links
Moving magnet and moving coil operation are selected using movable gold-plated links on the internal circuit board.
Nytech uses these links instead of miniature DIP switches, which were not originally developed to carry extremely low-level analogue audio signals.
The links provide a firm electrical connection and remain outside everyday operation once the cartridge type has been selected.
MM and MC Selection Is Internal
The CDP132 does not have an external MM and MC switch.
Disconnect the power supply and audio cables before any internal configuration is considered. Audio T should configure the unit for the intended cartridge where required.
A Simple Signal Path
The CDP132 avoids display circuits, microprocessors, relays, remote controls and digital control systems.
Once configured, normal operation simply involves connecting the turntable, attaching the earth lead where required and selecting an ordinary line-level input on the amplifier.
This simplicity allows the internal design to concentrate on low-noise amplification and accurate RIAA equalisation.
Low Power Requirement
The CDP132 requires a 24V DC supply and draws approximately 60mA.
Its low power requirement helps limit internally generated electrical noise and heat.
Nytech has designed the unit so it may remain powered continuously, allowing the analogue circuit to stay at a stable operating condition and remain ready for use.
It may still be switched off during extended periods away from home, electrical storms or whenever the connected system is being changed.
Internally Filtered DC Supply
The incoming DC supply is filtered inside the CDP132 to reduce the effect of noise from the external power adaptor.
This allows a straightforward plug-top supply to provide good results without placing a mains transformer inside the same enclosure as the low-level phono circuitry.
Keeping the transformer physically separate also reduces the risk of magnetic interference reaching the cartridge signal.
External Power Supply Placement
The power adaptor should be positioned away from the turntable, cartridge, tonearm cable and CDP132 input connections where practical.
Mains adaptors and transformers generate electromagnetic fields that can enter a phono system as audible hum.
Do not coil excess mains cable directly beside the turntable interconnect or cartridge input.
4mm Extruded Aluminium Case
The CDP132 uses a 4mm-thick extruded aluminium case.
The substantial enclosure provides mechanical protection for the circuit board while helping shield the low-level electronics from external interference.
Its compact format also makes it easier to position away from the larger mains transformers found inside amplifiers and other power components.
Copper-Screened Rear Panel
The rear connection panel incorporates copper screening around the sensitive input, output, earth and power connections.
Screening is particularly important with a phono stage because the cartridge signal is considerably smaller than an ordinary line-level source.
Even a small amount of induced noise can become clearly audible after the signal has passed through the required phono gain.
Artificial-Stone Front Panel
Nytech's distinctive artificial-stone front panel provides a rigid, non-metallic face for the enclosure.
Its understated appearance reflects the CDP132's purpose-driven design. There are no displays or operational controls on the front because cartridge selection is completed during setup rather than changed during listening.
Designed to Be Repairable
Nytech designs the CDP132 to be serviced and repaired if it develops a fault.
This is a welcome contrast to small audio products that are sealed, disposable or built around assemblies that cannot be maintained economically.
Its straightforward analogue circuit and hand-built construction support long-term ownership rather than short product cycles.
Hand-Built in South Wales
Nytech Audio manufactures its current equipment in South Wales.
The CDP132 is built above our Audio T Cardiff store, giving the Cardiff team particularly close access to the people responsible for its design and manufacture.
Nytech's revival continues the philosophy of the original company, concentrating on purposeful analogue engineering, musical performance and equipment that can be supported over the long term.
Turntable Earth Connection
A 3mm terminal post is provided for the turntable earth lead.
Many tonearms and turntables use a separate earth wire to prevent the arm tube, bearing and cable screening from introducing hum.
Connect the earth lead securely if the turntable provides one.
Some turntables earth through the audio cable and do not require a separate connection. Adding unnecessary earth links can occasionally create a ground loop.
RCA Input and Output Connections
The CDP132 provides stereo RCA input and output connections.
The turntable connects to the input sockets, while the output connects to a conventional line-level input on an amplifier or pre-amplifier.
Suitable amplifier inputs may be labelled AUX, Line, CD, Tuner or Tape.
Do Not Connect the Output to Another Phono Input
The CDP132 has already amplified and equalised the cartridge signal.
Its output must connect to a line-level input. Connecting it to an amplifier's MM or MC phono input will apply phono gain and RIAA equalisation a second time, producing severe distortion and excessive level.
Phono Cable Selection
The cable between the turntable and CDP132 carries an extremely small signal and should be well screened, low in noise and appropriate for phono use.
With a moving magnet cartridge, the cable's capacitance contributes to the total electrical load seen by the cartridge.
The line-level cable between the CDP132 and amplifier is less electrically critical, but should still provide secure connections and effective screening.
Avoid running either cable parallel and close to mains leads, plug-top power supplies or large transformers.
Placement and Hum Reduction
Phono equipment can be more sensitive to placement than an ordinary line-level source.
Keep the CDP132 away from:
- Large amplifier transformers
- Mains distribution blocks
- Plug-top power adaptors
- Wireless routers
- Chargers and switched-mode power supplies
- Televisions and set-top boxes
- Coiled mains cables
If hum is present, move the phono stage and power adaptor before replacing cables or altering the turntable wiring.
CDP132 or a Highly Adjustable Phono Stage?
Choose the Nytech CDP132 When
- You want support for a properly matched MM or MC cartridge
- A simple analogue signal path is a priority
- You do not want loading DIP switches in the signal path
- A transimpedance MC input suits the cartridge
- The cartridge will remain in the system for a reasonable period
- Hand-built and repairable British equipment appeals
- You value musical engagement over extensive front-panel features
Choose an Adjustable Phono Stage When
- You regularly change between several cartridges
- You require user-selectable MC loading resistances
- Gain must be altered without returning or opening the unit
- You need more than one turntable input
- Selectable equalisation curves are required
- You want remote control, displays or saved configurations
Moving Magnet or Moving Coil?
Moving Magnet Mode
- 40dB gain
- Standard 47k-ohm input resistance
- No user-selectable capacitance
- Passive two-stage RIAA equalisation
- Low-noise JFET amplification
- Suitable for compatible MM and some high-output cartridge designs
Moving Coil Mode
- Factory-set gain between 50dB and 60dB
- Dedicated transimpedance current-input stage
- No selectable loading resistors
- Best suited to compatible low-output MC cartridges
- Cartridge output and internal impedance must be checked
- Audio T configuration is recommended
CDP132 and CDP122
The CDP132 is the successor to Nytech's established CDP122, but the new model is more than a cosmetic revision.
The moving magnet stage has been completely redesigned around low-noise JFETs and passive two-stage RIAA filtering, while the moving coil input uses a dedicated transimpedance circuit.
During our Audio T Cardiff comparison, the CDP122 remained open, engaging and musical. The CDP132 built on those strengths with a larger and more precisely defined stereo image, clearer instrumental separation and improved access to low-level detail.
Existing CDP122 owners should arrange a comparison rather than assuming that age alone makes an upgrade essential. The rest of the turntable, cartridge, amplifier and loudspeakers will determine how clearly the improvement can be heard.
System Matching
Well Suited To
- Turntables using compatible moving magnet cartridges
- Turntables using suitable low-output moving coil cartridges
- Amplifiers without a built-in phono stage
- Systems where the internal phono input limits performance
- Nytech integrated, pre and power amplifier systems
- Listeners seeking a compact and repairable analogue component
- Systems where cartridge configuration will remain relatively stable
Check Before Buying
- Exact cartridge make and model
- Cartridge type and output voltage
- Moving coil internal impedance
- Required MC gain
- Whether internal MM or MC links are configured correctly
- Availability of a line-level amplifier input
- Turntable earth arrangement
- Power-supply and phono-stage placement
Connection and Setup Guidance
- Switch off the amplifier before connecting or disconnecting the turntable.
- Confirm whether the CDP132 is configured for MM or MC operation.
- Confirm that the factory-set MC gain suits the intended cartridge.
- Connect the turntable RCA leads to the CDP132 input.
- Connect the turntable earth lead to the 3mm terminal where required.
- Connect the CDP132 output to a conventional line-level amplifier input.
- Do not connect the output to another MM or MC phono input.
- Keep the input cable away from mains adaptors and transformers.
- Position the external power adaptor away from the turntable and phono leads.
- Connect the 24V DC supply only after the audio connections have been checked.
- Begin listening with the amplifier volume reduced.
- Do not open or reconfigure the CDP132 while it is connected to power.
Finish
Black
The CDP132 combines a black artificial-stone front panel with a substantial extruded aluminium enclosure and copper-screened rear connection panel.
Its deliberately simple exterior has no buttons, display or decorative illumination. Once configured for the intended cartridge, it is designed to remain powered and ready for use.
Nytech Products and Audio T Vinyl Guides
These Audio T links provide further information about Nytech, phono stages, cartridges and turntable system matching.
Key Features
- External RIAA phono stage
- Compatible with moving magnet cartridges
- Compatible with suitable moving coil cartridges
- Successor to the Nytech CDP122
- Completely redesigned moving magnet section
- Low-noise JFET amplification
- Two-stage passive RIAA filter
- RIAA equalisation outside a conventional feedback loop
- Standard 47k-ohm MM input resistance
- No user-selectable MM capacitance
- 40dB moving magnet gain
- Dedicated transimpedance moving coil input
- Current-to-voltage MC conversion
- Automatic electrical matching for compatible MC cartridges
- No user-selectable MC loading resistors
- Factory-set MC gain from 50dB to 60dB
- Gold-plated internal MM and MC selection links
- Stereo RCA cartridge input
- Stereo RCA line-level output
- 3mm turntable earth terminal
- Internally filtered 24V DC power input
- Low 60mA current requirement
- Suitable for continuous powered operation
- 4mm-thick extruded aluminium case
- Copper-screened rear panel
- Artificial-stone front panel
- Pure analogue circuit
- Designed to be serviceable and repairable
- Hand-built in South Wales
- Black finish
Frequently Asked Questions
What is the Nytech CDP132?
It is an external RIAA phono stage designed for compatible moving magnet and moving coil turntable cartridges.
Why do I need a phono stage?
A cartridge produces a very small, RIAA-encoded signal. The CDP132 amplifies it and restores the correct frequency balance before sending it to a line-level amplifier input.
Is the CDP132 compatible with moving magnet cartridges?
Yes. MM mode provides 40dB of gain and the standard 47k-ohm input resistance.
Is it compatible with moving coil cartridges?
Yes, provided the cartridge output and electrical characteristics suit the transimpedance input and factory-set gain.
Will it work with every moving coil cartridge?
No phono stage can be assumed to suit every cartridge. Provide Audio T with the exact cartridge model so its output, internal impedance and required gain can be checked.
What is a transimpedance phono input?
It is a current-to-voltage amplifier that responds to the current generated by a moving coil cartridge rather than treating it only as a conventional voltage source.
Does the MC input have adjustable loading?
No. Its transimpedance design removes the need for user-selectable loading resistors and capacitors.
What is the moving coil gain?
MC gain is set at the factory between 50dB and 60dB.
Can I change the moving coil gain myself?
It is not provided as an external user control. Discuss the intended cartridge with Audio T so the appropriate configuration can be confirmed.
How do I switch between MM and MC?
Moving magnet and moving coil operation are selected using gold-plated links on the internal circuit board.
Can I switch between MM and MC from the rear panel?
No. The CDP132 is intended to be configured for the cartridge during setup rather than changed routinely.
Does it have MM capacitance settings?
No. Nytech uses the standard 47k-ohm MM resistance and avoids adding selectable capacitance.
What is passive RIAA equalisation?
The frequency correction is applied through a passive component network positioned between amplification stages rather than being formed inside a conventional feedback loop.
What does no feedback mean?
The RIAA filter itself is not wrapped around the amplifier as part of a frequency-dependent feedback circuit.
Can I connect it to an amplifier's phono input?
No. Connect its output to a line-level input such as AUX, CD, Tuner or Tape.
Can it be used with an amplifier that already has a phono stage?
Yes. Simply connect the CDP132 to one of the amplifier's ordinary line inputs and leave the built-in phono input unused.
Can I connect two turntables?
No. The CDP132 has one stereo phono input.
Does it have balanced XLR outputs?
No. It provides stereo RCA inputs and outputs.
Does it have a USB output for recording vinyl?
No. It is a purely analogue phono stage.
Does it include a headphone amplifier?
No. Headphones must be connected to a suitable amplifier or separate headphone amplifier.
What power supply does it require?
It requires 24V DC and draws approximately 60mA.
Can it be left switched on?
Yes. Nytech has designed its low-power circuit so the CDP132 can remain powered and ready for use.
Should the power adaptor be kept away from the turntable?
Yes. Position it away from the cartridge, tonearm cable and phono input where practical to reduce the risk of induced hum.
What is the earth terminal used for?
It connects the separate earth lead supplied with many turntables and tonearms to help prevent hum.
What should I do if the system hums?
Check the turntable earth, cable routing and power-adaptor placement. Move the CDP132 away from amplifier transformers, mains blocks and wireless equipment.
Is the CDP132 the same circuit as the CDP122?
No. The MM stage has been completely redesigned and the MC input now uses a dedicated transimpedance amplifier.
Is it made in the UK?
Yes. Nytech builds the CDP132 in South Wales.
Can it be repaired?
Nytech has deliberately designed it to be serviceable and repairable if a fault develops.
Where can I hear it?
Nytech is stocked by Audio T Cardiff, where demonstrations can be arranged with suitable cartridges, turntables and amplifiers.
Why Buy From Audio T?
- Demonstrations at Audio T Cardiff
- Direct experience comparing the CDP132 and CDP122
- Advice matching the phono stage to your exact cartridge
- Moving magnet and moving coil compatibility checks
- Factory-set MC gain guidance
- Internal MM and MC link configuration
- Turntable earth and hum troubleshooting
- Phono cable and placement advice
- Cartridge fitting and turntable setup at participating stores
- Comparison with adjustable and dedicated MC phono stages
- Support from a retailer with a long relationship with Nytech
- Ongoing product and system assistance
- Part exchange may be available on suitable existing equipment
- Home demonstrations may be available by arrangement
Contact Audio T Cardiff to arrange a demonstration or discuss matching the Nytech CDP132 to your turntable and cartridge.