HI-END Study Attention E-405 Power Amplifier XLR/RCA Input Bass Tweeter Adjustment 200/380W 4/8Ohm 110/220V

Recommendation reasons

High-power Class A and Class B fully balanced bridge circuit

Pure Class A 30W+30W (connected to 8Ω)

Class A and Class B 200W+200W (connected to 8Ω)

Direct current purification technology

Imported with original packaging, American Anshen gold-sealed tube

Class AA pre-amplifier circuit

Benchmarking Accuphase E405 classic tuning

Three-level power supply soft start

Must-see for understanding E-405 combined power amplifier

The E-405 power amplifier is not just a high-power Class AB amplifier. It also functions as a pure Class A amplifier at medium to low volumes. It can deliver 60 watts of Class A power at 4 ohms and 30 watts at 8 ohms. This is similar to the once popular Marantz PM90, but the Marantz's Class A output is 20 watts. Don't underestimate our 30 watts of Class A output. Consider that the 845 single-ended vacuum tube amplifier only has a Class A output of 15 watts, yet it can still produce a powerful and earth-shattering sound. Moreover, we also have Class AB reserve power. When a high dynamic climax arrives, it automatically switches to 360 watts at 4 ohms, easily powering a pair of 12-inch speakers.

The E-405 power amplifier also caters to seasoned audiophiles, featuring four sets of speaker terminals. You can connect two pairs of speakers simultaneously, or use bi-wiring. Group A can be connected to the mid-range tweeter of the speakers, while Group B can be connected to the bass of the speakers. Different cables can be used to achieve the desired sound, extracting every last bit of potential from the speakers.

Refer to the 100,000-level Accuphase power amplifier

Refer to Accuphase E-405

E405 is a flagship integrated amplifier that our company has launched after two years of repeated debugging, auditioning, and comparison with original equipment. It is benchmarked against the Japanese original flagship integrated amplifier E-405. Before discussing sound, I think I should first express some of my own views on audio. I believe that the sound style of equipment is not influenced by the components used in its circuit, but rather by cultural differences between countries and designers' understanding of sound or music. Components are merely a means to achieve different sound styles.

The sound style of E-405 can be regarded as a typical representative of high-end Japanese equipment. Its sound, like Japanese crafts, pays great attention to every detail and belongs to a delicate and delicate sound quality like a small jade. So, it is particularly good at expressing sonatas or quartets, which are music software with few playing instruments. For example, listening to the recording of the violin and guitar of DG Company's "Paganini For Two" best demonstrates its advantages in this regard. Under the replay of the E-405, the music background is very peaceful and clean, making the sound of the violin and guitar quite vivid, with a cohesive and solid texture, rich details, crystal clear and glossy sound, and a slightly sweet and soft texture that can create a noble and gorgeous sound. Compared to the 100000 level Accuphase amplifier, the overall performance of the E-405 amplifier by the sound management is no less impressive. Worth having for audiophiles.

The power amplifier of a certain brand and model features a simple layout and lightweight design

The single transformer has a small volume and capacity, and lacks a pre-amplification circuit. It is a pure amplifier that requires the purchase of a pre-amplifier for use. The machine is lightweight and has an output power of 300W at 4 ohms. Please imagine and compare with the information you have reviewed.

The E-405 power amplifier is made of heavy materials and heavy physical weight. The double transformer has a large volume and capacity, and the machine is equipped with a Class A amplifier front-end and tone adjustment. The machine is heavy in weight, with an output power of 380W at 4 hours. The gold sealed tube has high power, high efficiency, good heat dissipation, and more transparent sound.

A certain brand and model of power amplifier with 2 channels and 2 outputs

Without a Pre circuit for volume adjustment, it can only be used as a pure amplifier power stage. It has only 2 sets of inputs and 2 power outputs. The function is single

E-405 power amplifier, 4-channel dual line sound splitting

Built in Class A front-end, adjustable volume. When in direct mode, it can also be used as a pure backend. 6 sets of inputs and 4 power outputs can be used as dual line splitting solutions or connected to another set of passive bass.

On the surface, there are significant differences in the cost of components, not to mention differences in functionality and sound effects.

Attention audiophiles, please make sure to distinguish!!!

Advantages of Imported Gold Sealed Tube Amplifier

The gold sealed tube amplifier has good sound quality balance, good heat dissipation, and good anti-interference performance

1. High input impedance is easy to drive, and the variation of input impedance with frequency is relatively small;

2. The input junction capacitance is small (feedback capacitance), and the change in output load has little impact on the input terminal;

3. High power utilization rate;

4. Strong driving load capacity;

5. Reasonable layout and wiring, high overall stability, good signal-to-noise ratio, and excellent performance of music details;

6. The gold sealed tube amplifier has good sound quality balance, uniform distribution of high, medium, and low frequency energy, natural and smooth fusion between frequency bands, and no abruptness or burrs, providing listeners with a comfortable and natural sound experience.

7. The gold sealed tube is encapsulated with a metal shell, which has good heat dissipation performance and can effectively reduce component temperature and improve stability.

8. The metal shell of the gold sealed tube can reduce the impact of external electromagnetic interference and improve the quality of signal transmission.

9. The gold sealed tube amplifier also has advantages such as stable static operating point and suppression of zero drift.

Listen to authentic music!

The E-405 has added tuning circuits and direct selection, allowing for the listening of unadorned and authentic music. You can also independently adjust the tweeter mid-range bass according to your personal preferences. Make music richer and more humanized.

Pressing the direct button mode can function as a pure amplifier, which can be connected to various advanced pre devices for external use

HI-END level

Luxurious electronic circuit design

Pure Class A and Class B high-power output, 200W (8Ω) × 2

The output utilizes eight gold-sealed high-power transistors, capable of driving down to 10 ohms per channel. The self-developed fully balanced low-noise module significantly widens the music frequency response, enhancing sound clarity and power. The voltage amplification section employs two parallel groups to reduce input noise and increase dynamic range. DC power stabilization technology ensures stable operation of the amplifier. Additionally, mains (220V) isolation technology is incorporated to effectively prevent DC components from entering the transformer,

Eight Anson US dollar sealed tubes

A single channel of 1000W is more than sufficient

E-405 utilizes the coveted original ON MJ15024, a dream come true for audiophiles

Eight renowned audio tube pairs (gold-sealed tubes) can easily handle 99% of the audiophile speakers on the market

Each Anson US dollar sealed tube has a power of 16A/250W

Each channel uses 4 units, totaling 1000W

And we only use 200W of it as pure power output, and its stability and safety have reached an unparalleled level

Using 100% original Anson high-power vacuum sealed tubes

MJ15024G Gold Sealed Audio Tube Original Brand New ON High Power Amplifier Tube

Model: MJ15024G

Parameters: Power consumption: 250W Voltage: 250V Current: 16A

Brand: ON

Origin: Mexico

The ON Gold Sealed Tube King MJ15024 has a very warm, delicate, and charming sound, making it a great choice for HIFI machines. ON Semiconductor (code: ON) is a company established in 1999 by a US company that separated its power division to provide high-performance power solutions. It has a global logistics network and a strong product line.

12 customized ELNA fever capacitors with 10000uf/63V capacity

12 Japanese ELNA capacitors and a large pond array provide continuous power for E405, effectively reducing the internal resistance of the power amplifier power supply, making the power ripple smooth, greatly improving the transparency and intensity of the sound, and providing important guarantees for the stable performance of the power amplifier during large dynamic operation

1300W ultra-large transformer boasts powerful power

Two 650W giant toroidal transformers are enclosed in two separate toroidal enclosures, equipped with A-type toroidal cores, achieving a power reserve of up to five times

The iron core used is made of imported high-grade material, which is also the most expensive material. It is impossible for a power amplifier at the same price point to use such material

Any difficult-to-push box can be easily overcome, with surging momentum akin to a fierce tiger descending from the mountains

This is how we are confident

Large built-in radiator

Equipped with a large built-in radiator, the chassis features corresponding ventilation holes on both the top and bottom covers. The radiator is designed to face face, significantly enhancing the cooling effect. Due to heat, air rises, and cold air naturally flows in from the bottom of the chassis, creating air convection,

DC Green Clean Technology

The power supply is cleaner

In order to ensure the stable operation of E405's giant ring bull with a power output of up to 1300W, we have added power full start technology and incorporated our own "DC green clean" technology to filter out the DC part of 220V AC ionization, making the power supply entering the transformer cleaner

Imported potentiometer from Japan

The consistency of the two-channel performance of Japanese ALPS potentiometers is excellent. Using ordinary instruments, it is impossible to detect any errors, and the sound coloration is very low with high fidelity. It is the preferred choice for high-end HiFi audio

Taiwan's Mio high-precision

5-color ring pure copper pin resistor

Taiwan Mio was founded in Xizhi City, Taipei in 1983, and later established a branch factory in Taoyuan in 1990,

The company currently employs nearly 2,000 people, including over 150 senior and intermediate technical personnel. With a history of over 30 years in the professional production of high-quality resistors, the company serves the industrial and electronic manufacturing (EMS) sectors

The resistance suppliers of customers such as R&D Center, Haier Electronics, Samsung, LG, and Toshiba in Brazil have successively passed VDI, UL, ISO9001, ISO14000, QC080000,

Waiting for certification from international certification systems.

Specification: 1/4W, 0.5% accuracy

Temperature drift / 25ppm

Diameter: 2.2±0.4mm

Length / 15.0±0.5mm

Condition/Brand New

*Taiwan Meeou 1/4W series metal film resistor, featuring 0.5% high precision, high reliability, low temperature drift, and low noise,

Suitable for high-demand applications such as electronic manufacturing, instrumentation, and audio equipment.Voltage stabilization and noise reduction system

Customized voltage stabilization system

Specially designed for high-precision circuits

Its internal resistance is small and the voltage is stable

Ultra low noise and output ripple

Effectively ensure the highly stable operation of the circuit

Improve transient and high-frequency characteristics

Professional Balance XL-IN Input

E-405 uses 2 sets of balanced inputs (BAL1 and BAL2):

Reducing noise: Balanced input usually refers to the amplitude and frequency of the input signal being the same or similar to the reference potential of the circuit, thus reducing noise. Reduce offset voltage: By balancing the voltage magnitude and sign of the input signal, and making it equal to the center point of the power supply voltage, the offset voltage can be reduced. Improve common mode rejection ratio: Balanced input can significantly reduce common mode distortion. Balanced input is widely used in circuits with high precision requirements.

There are two types of balanced output voltages internationally:

One method is to use Asia as the main source with a 2V voltage (1V positive and 1V negative), and RCA has an independent amplifier circuit with a 2V voltage. This way, when switching between balanced input or RCA input signals, the sound output from the speaker will be the same.

Another type is that the standard balanced output in Europe and America is 4V voltage (2V positive and negative). Generally, RCA does not have an independent amplifier circuit and can be directly pulled out from the positive or negative phase of the balanced output, saving the need for RCA amplifiers. The sound of the speaker is directly reflected in the switch to balanced input, which is twice as loud as RCA input. Some people who don't know may think that there is a problem with the amplifier. Excessive level input can even cause distortion in the speaker. After decades of experience, we have specially optimized for the above situation. We have designed one high-level input (BAL1) for two balanced inputs and one normal level input (BAL2) to solve customer problems. This is also what we should do.

Aluminum alloy remote control

Made of solid aluminum alloy, precision carved by CNC machining center, followed by wire drawing, sandblasting, oxidation, and silk screen printing. The buttons are self molded with high elasticity and comfort, making it easy to adjust the volume remotely

Product Model: E-405 Audio Power Amplifier

Rated continuous average output rate: 200W/CH (8 Ω); 380W/CH(40Ω)

Total harmonic distortion: 0.06% (4 Ω load); 0.02% (8Ωload)

Intermodulation distortion: 0.01% or lower

Frequency characteristics: rated continuous average output, 20-20000Hz (+0, -0.2dB)

Output power is 1W, 10-100000Hz (+0, -3dB)

Amplification factor: Pre5x amplifier, 28x

Damping coefficient: 480 (8 Ω load, 50Hz)

Input impedance: Balanced input: 40K Ω; RCA input: 20K Ω

Load impedance: 2-16 Ω

Twitter Bass tuning: ± 12DB 50Hz-20KHz continuously adjustable

Signal to noise ratio: Direct 125DB tone 118DB

Power requirements: AC~220V, 50/60Hz (110V can be customized)

Static power consumption: 50-400W meets the lEC60065 standard

Dimensions: 430MM (width) x 450MM (depth) x 170MM (height)

Net weight: 21kg

Implementing national standard: GB/T13837-2012

The E-405 audio power amplifier supports dual line splitting, and different wires can be used to match different sounds. It can make the speaker produce a drunken sound without spending money or less, squeezing out the last bit of potential of the speaker.