SOULNOTE E-3MC

PHONO EQUALIZER Silver / Black

TECHNOLOGY

The world’s first* phono equalizer with fully isolated left and right GNDs (* Based on SOULNOTE research)

E-3MC allows for the complete isolation of three GNDs: the chassis, the left and the right channel. All relay control signals for both the left and right blocks are thoroughly isolated using optocouplers to ensure complete galvanic isolation. By pairing it with models like the A-3 or P-3—which also feature fully independent left and right grounding—you can build a completely isolated ground system where the left and right channels never share a common ground from the cartridge all the way to the speakers. Furthermore, even if the left and right grounds are tied at the turntable, this setup remains exceptionally effective at keeping the grounds separate from that point onward. As a result, it achieves an extraordinarily vast, immersive soundstage alongside organic, deeply emotional music reproduction.

*Depending on the specifications of turntable or tonearm, it may be necessary to connect the left and right GNDs to the chassis. This can be done using the CHASSIS GND button on the front panel.

A newly developed MC Type-R circuit*

The newly developed MC Type-R circuit, designed specifically for MC/MM playback. It employs a single-ended configuration where all operations are ground-referenced, eliminating push-pull and bias circuits. This extremely simple non-NFB circuit preserves the freshness of the musical signal with transient response.

* Discrete high-gain non-NFB fully balanced ground-reference amplifier circuit

Super-strong power supply with 3 power transformers

The power supply consists of three transformers: a large transformer dedicated to the MC Type-R Circuit with independent left and right circuits, and a transformer for the relay control power supply. For a phono amplifier of only 25W the power consumption, the E-3MC has a power supply capacity equivalent to that of a 500W power amplifier. This margin supports unwavering music reproduction. A power transformer with copper short ring is used as the analog power transformer. This further improves the fine expression by suppressing noise caused by leakage flux.

High-speed non-NFB power supply

For the rectifying capacitor, a specially selected high withstand voltage small capacitance low magnification foil filter capacitor is used. To optimize the capacity, the number of units used was determined and the load on the power transformer was reduced. This further improved the real regulation of the ultra-powerful power transformer. For the rectifier diodes, SiC diodes of the latest specifications with enhanced allowable inrush current are used. This is the most powerful and high-speed power supply configuration ever considered. In addition, two large power relays with excellent sound quality are used independently and without fixing as power switches for the two main power transformers. In other words, the power switch on the front panel is dedicated to the control system sub-transformer. Independent power switch for each power transformer, which is a high current contact point, is very effective in terms of sound quality.

 

Unfixed structure

The amplifier block, terminals, AC inlet, top cover, and bottom cover are all unfixed. By eliminating stress from the chassis, it achieves natural and open music reproduction.

RSR-2-12D (Reference SOULNOTE Relay)

An ultra-low loss glass tube sealed reed relay that performs similar to a mercury relay as a base has been further customized. This is an original custom relay created by SOULNOTE that can reach sound quality levels comparable to that of wire. The E-3MC uses the RSR-2-12D for all relays involved in sound quality.

Ultra high-quality naked foil resistors

Based on satellite-grade ultra-high-precision foil resistors with excellent temperature characteristics, these components have been further customized with a focus on sound quality. These ultra-high sound quality resistors were developed in-house and employ a naked foil design to eliminate dumps with mold resin. The E-3MC uses ultra high-quality naked foil resistors for all resistors related to sound quality.
 

Rear panel

SPECIFICATIONS

Input (MC) BALANCED x 1, UNBALANCED x 2
Input (MM) UNBALANCED x 1
Output BALANCED x 1, UNBALANCED x 1
Input sensitivity MC: 0.4mV, MM: 4mV
Gain MC: 72dB, MM: 52dB
Rated Output Voltage BALANCE: 2.8V, UNBALANCE: 1.4V
RIAA deviation ±0.15 dB
MC load resistance 3 Ω, 10 Ω, 30 Ω, 100 Ω, 300 Ω, 1 kΩ
MM load capacitance 100 P, 200 P, 350 P
MM load resistance 47 kΩ
Power Voltage 230V AC 50Hz / 115V AC 60Hz
Power Consumption 25W
Dimensions 454(W) × 189(H) × 431(D) mm
Weight Approximately 26.0 kg
Included Accessories Spikes, Spike board, Setting spacer, Power cable