Aurorasound AFE-12 Step-Up Transformer
The AFE-12 is a compact step-up transformer designed to allow low-output moving coil cartridges to be used with standard MM phono inputs. By using a transformer-based approach, it preserves signal integrity while providing the necessary gain without introducing active circuitry.
Key features:
• step-up transformer (MC to MM)
• Lundahl MC transformer
• selectable cartridge loading (3 positions)
• passive design – no active circuitry
• gold-plated RCA connectors
• compact, vibration-damped enclosure
Design and performance:
The AFE-12 uses a high-quality Lundahl transformer to step up the signal from low-output MC cartridges. This method maintains the natural characteristics of the cartridge, avoiding coloration while improving signal level for MM inputs.
A three-position impedance selector allows matching to different cartridge types:
• low: 0.7 – 10Ω
• mid: 11 – 30Ω
• high: 31 – 100Ω
This flexibility ensures optimal loading and performance across a wide range of MC cartridges.
Materials and construction:
• Lundahl transformer core
• gold-plated RCA input and output connectors
• pure cotton internal damping material
• compact metal enclosure
The internal use of pure cotton damping helps reduce mechanical vibration, contributing to cleaner signal transmission.
Sound characteristics:
• transparent and uncoloured presentation
• preserves cartridge tonal balance
• improved gain without added noise
• stable and natural signal transfer
The passive transformer design avoids introducing additional noise or distortion, making it an effective solution for high-quality analogue systems.
Build and usability:
The AFE-12 is simple to integrate into a system, sitting between the turntable and a MM phono stage. Its compact size allows easy placement without taking up significant space.
Specifications:
• input: RCA (from turntable MC cartridge)
• output: RCA (to MM phono stage)
• gain: 26dB (low position)
• frequency response: 20Hz – 50kHz (-3dB)
• impedance selection: low / mid / high
• dimensions: 70 x 30 x 95mm
• weight: 244g
Note:
The AFE-12 is designed for use with low-output moving coil cartridges and a MM phono stage. Correct impedance selection is important to achieve optimal performance.
