WELTRONICS

AMC

The awakening of a Sleeping Beauty
 
Peter Bath, formerly at NAD, Acoustic Research, Proton and others, harnessed the cost efficiencies that are available from AMC's “common-platform” product design and ODM JIT SoD production efficiency to bring to market a product range that pretty much ticks all the boxes on an Audiophile’s wish list … at very attractive prices. 

Specifications

 

Rated Power into 8/4ohms

30W - RMS both channels driven

Rated THD

20Hz-20KHz - 1.0%

Clipping @ 1kHz into 8/4ohms

36W

Input Sensitivity

High level inputs - 34mV/180mV

Phono MM Input -  0.5mV/2.7mV

Phono MC  Input - 0.04mV/0.2mV

Input impedance

High Level Inputs - 12K ohm/100pF Phono Input - 47Kohm /100pF

Frequency Response

Tone Bypass 20Hz-20KHz  +/-0.5dB

Normal 20Hz-20KHz   +/-1.0dB

High level inputs 10Hz/80KHz  -3dB

Dimensions (WxHxD)

430 x112 x 288 mm

Net Weight

14 Kgs

Shipping Weight

15Kgs

CVT 3030 MKII

Integrated

 

The AMC CVT3030MKII is a hybrid Mosfet-Valve design that represents outstanding value.

It has been designed with components of the highest quality to give a superb - "best of both worlds" -  sound quality. 

Key Features of AMC's proprietary Class A hybrid MOS-FET amplification topology :

A. 1000V MOS-FETs configured in exactly the same way as Classical Valve Class A amplifier stages. This approach offers excellent dynamic range.

B. FETs provide greater pre and driver stage amplification accuracy to the final Power Tube Stage. The result is a more coherent Frequency Response a more stable Soundstage.

  

C. Operational Life and Reliability are significantly better compared to Classical Valve designs.

$1,499

Product features

  • EL34 Power Tubes x 4

  • Tube Rolling : YES

  • VRC Volume Rotary Control 

  • Switches and relay-free source selection

  • Phono MM

  • Phono MC

  • TOS Hi-Res Streamer Input

    • e.g. Primo-HD for Tidal, Qobuz etc ​

  • Bypass-able tone control

  • Headphone output

  • System Remote Control

  • Removable power cord

  • Optional module

    • 24bit PCM DAC module S/PDIF digital input (user-swappable for phono board) - $199

  • Inputs (line / phono) - 5/1

  • Tape output - 1

  • Pre-Out - 1

AMC CVT-3030 MK2

The first variant of the AMC 3030 was launched in 1995, and it put its mark on Audio History by garnering an absolutely unexpected and special market position. In times when tube amplifiers were waning in popularity, this hybrid integrated amp won one accolade after another. 

Today, 25 years later, we present the "Rebirth of a Classic" in the form of the current MK2 version ... With improved circuitry, even better components and IR remote control !

 

At a really untypical price, AMC is offering audiophiles a very high quality, fully equipped integrated amplifier with a tube output stage. On top of that they threw in a discrete circuit Phono MM  / MC input ... Funny how, of all things ... this just so happens to be relevant today.

AMC's legendary circuit of MosFET driver stage and tube power stage has been retained in the MKII. The effort involved in the design of the circuitry and in the choice of components used is really enormous. In the latest version, further improvements to components and circuit details were implemented. State-of-the-art industrial production uses high-quality transformers that can also be adjusted to the respective impedance of the loudspeaker used.

Ease of Service for "very" long-term functional integrity was also built into the MKII's concept. This translates into an ingenious sub-circuit  "modularity" and a awe-inspiring tank-like build quality. Instead of "bling" they gave us a "Hummer". Standard tubes such as the EL 34 are used here. Quality here too: AMC uses selected Russian tubes that have proven to be the best in terms of sound ... short of TELE Wing-Anodes or Blackburn Mullards ...  but if "roll we must then roll we can"... the new MK2 thankfully got fitted with a set of nice octal tube sockets.

A carefully thought through recipe for years of hassle free enjoyment of the natural sound of your AMC amplifier.

Specifications

 

Rated Power into 8/4ohms

80W - RMS both channels driven

Rated THD

45Hz-20KHz - 1.0%

Clipping @ 1kHz into 8/4ohms

85W

Input Sensitivity

High level inputs - 20mV/180mV

Phono MM Input -  0.4mV/2.2mV

Phono MC  Input - 0.04mV/0.2mV

Input impedance

High Level Inputs - 12K ohm/100pF Phono Input - 47Kohm /100pF

Frequency Response

Tone Bypass 20Hz-20KHz  +/-0.5dB

Normal 20Hz-20KHz   +/-1.0dB

High level inputs 15Hz/40KHz  -3dB

Dimensions (WxHxD)

430 x112 x 389 mm

Net Weight

19 Kgs

Shipping Weight

20Kgs

CVT 3100 MKII

Integrated

 

The AMC CVT3100MKII is a hybrid Mosfet-Valve design that represents outstanding value.

It has been designed with components of the highest quality to give a superb - "best of both worlds" -  sound quality. 

Key Features of AMC's proprietary Class A hybrid MOS-FET amplification topology :

A. 1000V MOS-FETs configured in exactly the same way as Classical Valve Class A amplifier stages. This approach offers excellent dynamic range.

B. FETs provide greater pre and driver stage amplification accuracy to the final Power Tube Stage. The result is a more coherent Frequency Response a more stable Soundstage.

  

C. Operational Life and Reliability are significantly better compared to Classical Valve designs.

$2,799

Product features

  • KT88 Power Tubes x 4

  • Tube Rolling : YES

  • VRC Volume Rotary Control 

  • Switches and relay-free source selection

  • Phono MM

  • Phono MC

  • TOS Hi-Res Streamer Input

    • e.g. Primo-HD for Tidal, Qobuz etc ​

  • Bypass-able tone control

  • Headphone output

  • System Remote Control

  • Removable power cord

  • Optional module

    • 24bit PCM DAC module S/PDIF digital input (user-swappable for phono board) - $199

  • Inputs (line / phono) - 5/1

  • Tape output - 1

  • Pre-Out - 1

AMC CVT-3100 MK2


The little brother of the AMC-CVT 3100, the AMC-CVT3030, was launched in its first variant in 1995 to great acclaim. Shortly after the 3030's re-incarnation in MKII form, AMC is responding

again ... this time to the demand for higher output "tube power" to drive difficult speaker loads. 

 

Meet the AMC-CVT3100MKII. As with the CVT 3030 MKII, this 80W RMS tube amp ups the ante even further in terms of $ per "musical Watt" Value.

AMC's design approach for the CVT 3100 MKII uses the same mechanical and circuitry foundation as used for the 3030 ... just that this one delivers 50W RMS more from a quad of KT88s / 6550s. And it does this whilst remaining equally uncompromising  in terms of relative SQ.

Got 85dB loudspeakers @ 4 ohms ? The current drive from this amp's massive OPTs and very generously over-rated Power Supply will tame your urge to opt for a solid state powerhouse !

What ? ... Not enough power ?  ... well OK, take a "look-see" below !

Specifications

 

Rated Power into 8/4ohms

80W - RMS  / STEREO Mode

160X - RMS / MONO Mode

Rated THD

45Hz-20KHz - 1.0%

Clipping @ 1kHz into 8/4ohms

85W Stereo  / 170W Mono

Input Sensitivity

138mV/1230mV

Input impedance

500 Kohm ohm / 470pF 

Frequency Response

20Hz-20KHz   +/-0.5dB

10Hz-80KHz  -3dB

Dimensions (WxHxD)

430 x112 x 288 mm

Net Weight

19 Kgs

Shipping Weight

20Kgs

CVT 2100 MKII

Bridge-able

VT Power Amplifier

 

The AMC CVT 2100 MK2 is a high-performance tube-based power amplifier with 2x80W or 1x160W in bridged mode.

It is essentially the CVT 3100 MKII minus all the Preamp functionality and connectivity.

It's key reason for existing is that it can be configured to deliver twice the power of the Stereo version if required.

It was designed to be a "separate" that could be used

with AMC's own separate Preamps, the CVT 1030 MKII or the Solid State Xpi...or with preamps from other manufactures. 

$1,699  -  Stereo

Un-balanced RCA Inputs 

$1,998  -  Stereo

Balanced XLR Inputs

$3,790  -  Mono Pair

Balanced XLR Input

Product features

  • KT88 Power Tubes x 4

  • Tube Rolling : YES

  • Removable power cord

  • Optional modules

    • Module "MD 2102" for Mono bridge operation plus 1 x balanced input

      • $199

    • Module "MD 2103" for Stereo XLR balanced input

      • $299

  • Standard Inputs (RCA) - 1

    • Module "MD 2101" for​ Stereo un-balanced input

Specifications

Rated THD

0.03%

S/N Ratio (ref 1V)

High Level Inputs - "A"/WTD - 96 dB

Phono Inputs - "A"/WTD - 82 dB

Input Sensitivity

200mV - High Level Inputs

2mV - Phono MM Input

0.2mV - Phono MC Input

Input impedance

High Level - 20 Kohm /100pF

Phono MM/MC - 47 Kohm /100pF

Output Impedance

< 200 ohm

Frequency Response

Tone Controls20Hz-20KHz   +/1dB

Direct - 20Hz-20KHz   +/-0.5dB

10Hz-80KHz  -3dB

Dimensions (WxHxD)

430 x112 x 288 mm

Net Weight

6.5 Kgs

Shipping Weight

7.5 Kgs

CVT 1030 MKII

Preamplifier

 

The AMC-1030 tube preamplifier follows the same modular format of our classic CVT-3030. It has now also been upgraded to MK2 level ... and comes with motorized remote control !

 

With its 5 RCA inputs, a MM Phono Input, Tape Loop, a Headphone Output, Bass and Treble controls... and tone-bypass "Direct" mode, it offers all the functions you would expect from a preamp in this category.
 

It boasts remarkably excellent THD, S/N and Frequency Response specs for a tube preamp, and can handle high input voltages that make it compatible with any kind of music ... even complex music with exceptionally demanding dynamics !

 

The MK2 now includes tube sockets, so Tube Rollers can now "tweek away".

$1,099

Un-balanced RCA Output

$1,399

Balanced XLR Output

Product features

  • Proprietary FET / Tube circuit

  • ECC83 x 2 + ECC82 x 2

  • Tube Rolling : YES

  • VRC Volume Rotary Control - motorized

  • Phono MM

  • Phono MC

    • selectable on Board​

  • TOS Hi-Res Streamer Input

  • e.g. Primo-HD for Tidal, Qobuz etc ​

  • Tone Control Mode

  • Direct Mode / tone control by-pass

  • Headphone output (*)

  • System Remote Control

  • Removable power cord

  • Relay-free switch source selection

  • Optional module 1 : 

    • Module "MD 1403" for Stereo XLR balanced output

      • $299

  • Optional module 2 : 

    • Module "MD 1101" - 24 Bit Upscaling SPDIF DAC

    • Replaces Phono Board ! 

      • $199

  • Standard Inputs

    • Inputs (Line / Phono) : 6 / 1

    • Tape output : 1

    • Pre-Out : 1

(*) Headphones Output

 

The signal  passes through the FET / Vacuum Tube topology circuit to deliver Class A vacuum tube sound.

AMC designed the output stage with high speed amplifiers with internally phase-compensated gain and a high slew rate of 3.0V/uS @ fT=10MHz . The noise floor is low at 1.8uVrms.

 

So, this output can drive all types of headphones with various impedances comfortably. AMC designed the outputs to be purely resistive. As such, the sound quality of headphones will be dependent on the characteristics of the headphones used.

VRI - The Rotary Volume Input Topology 

 

A step-less potentiometer switches the source, no switch or relay. 

 

The fine signals are passed on to the other amplifier stages free of contact difficulties.
 

Only what is not lost in the front, can also be restituted in the output stage!

HCO Power Topology 

 

HCO - High Current Output Power Supplies 

 

Music consists of impulses. However, regular power supplies, and in particular switching power supplies, are designed statically.
 

The HCO technology, in contrast, provides dynamically much higher power reserves whilst delivering extremely high current output.

 

Toroidal power supplies, in combination with the legendary Sanken output transistors, unleash the music with all its dynamism and liveliness ... even with difficult speaker loads !

MUSIC

PLAYER

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