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AM Hi-End RT-1

AM Hi-End RT-1

The volume control system consists of a volume switch coupled to a volume transformer, that we produce and used for many years.

The benefit of this volume control is that the sonic background is very quiet and natural with a detail rich retrieval and a rich musicality that will clearly reveal every note of any piece of music.

We use a Single Ended design which is more natural sounding and dynamic than Balanced designs employed mainly for the studio environment.

The R-T1 preamp is a dual mono design, from the transformers, power supply to the voltage regulation, all completely separated to avoid noise and cross talk. We use a large number of high value U-Cap copper foil capacitors, which were carefully chosen for their naturally detailed sound. The output transformers bandwidth will extend from15 HZ to 120KHZ

.The unique design of our new tube preamplifier named "Magnetic AM R-T1" can be implied from the prefix: "magnetic", which indicates its direct origin from the AM magnetic passive preamp. Not only does AM R-T1 utilise transformers for volume attenuation, it also employs another two transformers for the signal output and two more for power supplies.

The remarkable level of performance has been achieved with an all new audio and power supply circuit design. This new audio circuit is all tube, Class-A, with zero feedback, utilising a total of four long-life tubes (2 x 6H30 as the drivers and 2 x 6922 as the amplifiers); and furthermore, it is a true dual mono circuit design in both the input and output stages, with the support of two volume control transformers. 

The Magnetic R-TI is a direct upgrade from the Audio Music reference version of the magnetic passive preamp, which already delivers an exceptional performance over other similarly employed designs, by using both tube amplifiers and output transformers. One great advantage of this magnetic feature is that it is capable of optimally matching any power amplifier and interconnects, while accepting inputs from any sources of various impedance levels, with the least possible interference to the signal.

The power supply in the R-T1 is also dual mono. The main power transformer, which is used to power the audio circuit, and Mosfets, that are used for both the voltage stabilisation and for a constant current supply. This enhances the reliability, and makes the tube amplification as linear as possible.

With its great build quality, audiophile grade components, versatility and the ability to musically transform any system, not only does the AM R-TI deliver striking clarity and detail that presents instrumental timbres and textures in an amazingly lifelike way, it also represents great value, with great reliability and stunning looks.

Above information taken from AM Hi-End Website.

  • Manufacturer's Description

    • Two transformers for volume attenuation with 33 steps.

    • Transformer output.

    • Independent regulated power supply.

    • The left and right channels are a completely independent dual mono design.

    • Single ended tube Pure Class-A design with a zero feedback audio circuit.

    • Versatility to electrically match any source, amplifier and interconnects, based on a fully magnetic transformer implemented design.

    • MOS-FETS for voltage stabilization and constant current supply.

    • U-cap capacitors in signal path.

    • Detachable IEC power cord. 

    • High quality gold-plated AM custom binding posts and RCA jacks.TEFLON insulated wireand

    • Japanese made POCC rectangular solid core copper wire all the way through

    • Precision matched aluminums alloy chassis and exceptional build quality.


    • Tube complement two 6H30 or 6H6N as the drivers, two 6922 as the amplifiers

    • Frequence response20 Hz ~ 100KHz 

    • Input Impedance47k ohms variable depending on the source

    • Volume control 33-speed volume control

    • Output Impedance

    • 600 ohms . RCA output & BAL output.

    • Input selections  3 pairs RCA single-ended ; 3 pairs balanced / XLR

    • GainInput 0.5V  output 2.5V

    • S / N> 98dB 

    • Distortion rate

    • under  0.5% / 5V

    • Power consumption

    • 45 watts

    • Dimensions (W * D * H)380W*340D*110H*(mm)

    • Weight38 Kg shipping weight


    UK Shipping: 

    APC Overnight (up to 30kg). The premium Next Day service is upgraded on request to 12 noon delivery / SECURITY / Saturday and various options. We have found APC to be a reliable, courteous and predictable service.


    Europe, EC, and abroad: 

    For every despatch we use a professional broker to organize the fastest and highest quality shippers, and we normally use DHL or UPS depending on territory. Our broker monitors the documentation and Customs Clearance carried out by these two reliable carriers.

    Above 30kg: 

    For UK and overseas we use pallet shipping which is a professional service and avoids risks of mishandling and loss. It is not expensive under our contractors and worth a quote.


    The Music Room enjoys a 40-year tradition of customer care and at time of writing, full 5-star Google reviews. In addition UK customers enjoy the legal rights of mail order and distant selling. 

    We have exported happily for many years and most probably have happy customers in your country who will confirm our reliability and refund in the event of mishaps. 

    Refunds can only be made by the same payment form and to the same account to avoid possible fraud or money laundering.

  • The Music Room price matching...

    The Music Room price matching...

    We are an official Esoteric dealer and offer the best UK prices. If you have seen this product cheaper elsewhere, Let us know; we will match or beat any price.

"See us at the NorthWest Audio Show, 22-23 June 2024" 
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