Audiolab has launched the PPA7, a new standalone phono stage combining analogue vinyl playback with a built-in headphone amplifier, Bluetooth transmission and USB recording for digital archiving. This marks Audiolab’s first standalone phono stage for almost 20 years.
The PPA7 has been designed to make the most of the signal as the cartridge tracks the groove, combining high-quality analogue amplification with features that extend vinyl’s appeal well beyond the traditional hi-fi system. For starters, it includes a built-in headphone amplifier.
It also incorporates an ADC (Analogue-to-Digital Converter). This has two purposes: streaming vinyl over Bluetooth to wireless headphones or speakers and connecting to a PC or Mac to convert vinyl into digital files for storage and playback.
The PPA7 will look familiar to those who know Audiolab’s D7 DAC, launched last year. Its compact, desktop-sized aluminium case (208×56×180mm) is identical, right down to the two multifunction rotary controls flanking a 33mm OLED display.
The D7 and PPA7 make natural companions: one is designed to make the most of digital audio sources, the other to do the same with vinyl. D-to-A conversion in one, A-to-D conversion in the other – two sides of the same expertly engineered sonic coin.
Every circuit decision matters – input noise, grounding, power supply isolation, board layout, gain structure, overload margin and output stage design all influence the sonic result. Separate stereo RCA inputs are provided for moving magnet (MM) and moving coil (MC) cartridges, alongside RCA outputs for connecting to a system amplifier or powered speakers. The output can be configured as fixed or variable, with the latter engaging a built-in volume control for direct connection to a power amplifier.
A stable, well-regulated power supply is vital when handling the delicate signals produced by a phono cartridge. It helps to minimise noise, maintain consistent operating conditions and preserve signal integrity throughout the amplification and equalisation stages. The PPA7’s 12V DC input is converted internally into a symmetrical, regulated ±8.5V supply for the analogue circuitry, using separate positive and negative regulation stages.
Cartridge tuning MM and MC are the two main types of phono cartridge. MM cartridges are generally more affordable and easier to accommodate in a wide range of systems, making them a popular starting point. MC designs are often more expensive and typically require greater amplification but can reward listeners with exceptional refinement and detail.
The PPA7 accommodates both types, with adjustable settings to match the phono stage to the cartridge’s electrical characteristics. For MM cartridges, the standard 47kΩ input impedance is complemented by selectable 100pF or 220pF capacitance.
These options allow users to tailor the total capacitive load presented by the phono stage and connected cabling, helping achieve the desired high frequency response and tonal balance. For MC cartridges, selectable 100R (100 ohms) and 330R (330 ohms) resistive loading provides further flexibility. Different loading values affect the electrical conditions under which the cartridge operates and can influence its frequency response and overall presentation.
The optimum setting depends on the cartridge, allowing users to fine-tune the sound to suit their system. Gain can be adjusted by ±6dB in 1dB steps, with maximum gain of 52dB for MM cartridges and 66dB for MC cartridges.
This flexibility suits cartridges with differing output levels and provides the appropriate signal to the connected amplifier. Together, these features make it easier to optimise the PPA7 for a chosen cartridge and accommodate future upgrades without replacing the phono stage.
Its desktop-friendly dimensions and built-in headphone amplifier provide a high-quality solution for headphone-loving vinyl fans, without requiring a hi-fi rack full of equipment.
Delivering up to 600mW of power to drive loads ranging from 20 to 600 ohms via a front-mounted 6.35mm socket, the headphone amplifier combines a current-feedback design with wide bandwidth.
Built-in Bluetooth transmission allows PPA7 owners to enjoy their vinyl collection through wireless headphones and speakers. Bluetooth 5.3 supports reliable connectivity, while aptX HD enables enhanced wireless sound quality with compatible devices.
For listeners who use wireless headphones and speakers every day, the PPA7 makes it easier to enjoy vinyl in situations that might otherwise call for a digital source. Crucially, these added conveniences do not come at the expense of the phono stage’s analogue performance in a hi-fi context.
Digital archiving of vinyl is another string to the PPA7’s bow, its USB-C output connecting to a PC or Mac so records can be digitised for storage and playback. With support for 16- and 24-bit recording at sample rates from 44.1kHz to 192kHz, the PPA7 can convert vinyl to uncompressed CD quality and beyond, says the manufacturer. The output level is adjustable from -12dB to +3dB to achieve an ideal balance between recording loudness and the audible noise floor.
If the PPA7’s menu system is accessed via a clear OLED display, intuitive front-panel controls and supplied remote handset. A USB-A data input supports future firmware updates, while 12V trigger inputs and outputs allow the PPA7 to integrate with compatible system components for coordinated power-up and power-down.
The PPA7 is available from late October in a choice of black or silver, at an RRP of £499.