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Audio Note M5 Tube Preamplifier

Audio Note M5 Tube Preamplifier

SKU: M5-Line-BlackAudio Note
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Product Description

The Audio Note (UK) M5 Pre Amplifier has been specifically engineered for sonic performance rather than technical specification, and fulfills all Audio Note (UK) Level 3 criteria: -

Pure Class A operation

Zero negative feedback

Single Ended circuit topology

Valve rectification

Materials and component quality

It is well known that the accurate reproduction of music, not just sound, requires the purity of the incoming signal to be preserved. It is therefore not difficult to conclude that, in order to achieve this goal and to retain the musicality of the original performance, the complexity of the circuitry itself must be kept to a minimum. In response to this, the M5 Pre Amplifier uses a single-ended, zero feedback circuit topology. This is simply the most linear design possible, demanding pure Class A valve operation and removing the need for a phase splitter, which introduces unnecessary crossover distortion.

In contrast to the majority of the audio industry, we design our circuits with the aim of minimising non-harmonic and time base anomalies, rather than producing vanishingly small harmonic or low intermodulation distortion measurements. These non-harmonic amplitude and time base distortions have a highly perceptible and adverse affect on the signal waveform, and it is far more important to address these factors than participate in the increasingly irrelevant numbers game that chases „perfect measured response‟.

As a result, the M5 was designed for maximum linearity and minimum transient distortion, and avoids the need for detrimental „corrective‟ measures, such as inherently error-prone feedback loops.

Rather than using separate controls for volume and balance, the M5 Line is equipped with a dedicated Audio Note (UK) stepped attenuator for each channel. This not only brings the enormous improvements in sound quality expected from the now legendary Audio Note (UK) stepped attenuators, but also provides a level of channel balance accuracy that is impossible to achieve with conventional volume and balance potentiometers.

he M5 Pre Amplifier features an ECC82 and 7044 line stage, and uses a 6X5 valve rectified power supply based on the M10‟s Galahad PSU. This power supply also incorporates an ECL82 for voltage regulation and a 5651 as a voltage stabilizer. Audio Note (UK) Copper wiring, tantalum resistors, SILMIC filter capacitors and Audio Note (UK) copper foil signal capacitors are used throughout the circuit, along with in-house designed and manufactured, custom Audio Note (UK) output transformers which feature a HiB c-cores and copper windings. The M5 Linealso has a correctly designed and implemented balanced output circuit.

At the heart of the M5 RIAA is an exceptionally fine Moving Magnet phonostage which uses three GE 6072a / 12AY7 valves. This is followed by an ECC82 and 5687 line stage, and both sections are powered by their own dedicated 6X5 valve rectified power supply based on the M10‟s Galahad PSU. These power supplies also incorporate an ECL82 for voltage regulation and an OB2 as a voltage stabilizer. Audio Note (UK) Copper wiring, tantalum resistors, SILMIC capacitors and Audio Note (UK) copper foil signal capacitors are used throughout the circuit, along with inhouse designed and manufactured, custom Audio Note (UK) output transformers which feature IHiB double c-cores and copper windings. The M5 RIAA also has a correctly designed and implemented balanced output circuit.

Shipping

All orders are processed within 48 hours from date of order.

We offer Free Ground Shipping on all orders regardless of size.  

  • If you would like to receive your order quicker you can request Express shipping during Check-Out in the Comments section.  Additional charges will apply.
  • In-stock items are shipped from our Vancouver warehouse and will reach major Canadian cities in 5-7 business days.
  • Items not in stock will either ship from one of our manufacturer partners' warehouses or in rare cases first must be sent to Vancouver and then to you.  
    • If the expected arrival to you will be more than 7 business days you will be notified by email and at that point you will have the option to proceed or if you cannot wait then order can be cancelled.

Returns Policy 

We will gladly:

  • (a) exchange a product that is not special ordered, or shipped from one of our partner warehouses, for a new product of equal value (product purchased must be unopened)
  • (b) exchange a product if it is defective or damaged for the same product

within 15 days after the product has been delivered to you.

Returns for refund are not accepted.

For an exchange, you must notify us by email at info@hificentre.com. We will acknowledge receipt of your email by reply and assist you in returning the product as identified below. Make sure to send and have your return package post marked within the 15 days after the product has been delivered to you.

Exceptions:

  • Headphones may not be returned or exchanged for any reason, only defective units will be replaced for the same model
  • Items that have been opened may not be returned

Cancellations:

Notwithstanding the foregoing, you may cancel an order if the product is not delivered to the delivery address on your order form within 30 days of the date your order is accepted.

To cancel, you must notify us by email at info@hificentre.com. We will acknowledge receipt of your email and process the cancellation.

Returns Packaging:

Products returning for exchange must be unused and in their sealed, original factory packaging.

Buyer is responsible for return shipping costs.

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