The Rotel Phono Stage: A Giant Killer in Audio

The NE5532 is widely regarded as the industry standard in professional audio, dating back to the early 80’s. So, what does this mean? In simple terms, the NE5532 is an older design that requires more power but is known for its ability to 'kill' high-frequency distortion, making it a formidable opponent even among expensive op-amps. The Rotel phono stage uses a Signetics (or possibly Texas Instruments) Opamp (NE5532), unlike the New Japan Radio Opamp often favored by Rotel (NJM2068).

One notable feature of this design is its loading capacitance, which is 220pF – 70pF higher than the standard Rotel Ortofon 2M cartridge would typically require. This increased capacitance allows for more definition in the treble region and may even enhance overall sound quality.

In comparison to the Cambridge CP2 phono stage, there are some interesting differences worth considering. While both are op-amp based designs, the CP2 offers a few unique features that might appeal to audiophiles. Ultimately, the choice between these two options comes down to personal preference and your specific needs.

As with any hifi system, it's possible to find areas for improvement, which can lead to an endless rabbit hole of tweaks and modifications. One approach is to experiment with different op-amps or loading capacitance values. For example, I've modified the phono stages on my Rotel equipment by replacing NJR IC Opamps with Burr-Brown units, which yield a slightly warmer sound.

If you're looking for an upgrade, there are options available in the mid-range price category. The Project Design Phono Box DS2 offers fine-tuning capabilities for capacitance and resistance loading, as well as adjustable gain. However, it carries a higher price tag of around £300. Graham Slee gram-amps also offer excellent performance but lack the customizations offered by the Project Design unit. The Era Gold V is a particularly nice-sounding option, though at a higher cost.

Ultimately, the choice between these options depends on your budget and priorities. If you're looking to improve your phono stage setup without breaking the bank, it's worth exploring different op-amp and loading capacitance configurations to find the best fit for your system.

Rotel pre amp