【Important Notice for International Buyers – Tomoayax Premium Audio Hi-Fi Japan】
■ Voltage Compatibility
This product is designed exclusively for use in Japan (AC 100V, 50/60Hz).
Many regions use 120V or 220–240V.
Using this product without a proper transformer in such voltage environments may result in malfunction, overheating, or serious and irreversible damage.
■ Plug Type
This product uses a Japanese plug (Type A or B).
A plug adapter may be required depending on your region.
■ Transformer Requirement (Very Important)
A transformer is required for safe use.
A plug adapter only changes the plug shape and DOES NOT convert voltage.
Using this product without a transformer may cause serious and irreversible damage.
■ Buyer Responsibility
As this is high-end audio equipment, the buyer is fully responsible for confirming compatibility with their local voltage (100V / 120V / 220–240V) and usage environment before purchase.
■ No Return / No Refund Policy
We do NOT accept returns or refunds for:
・Voltage mismatch (including 120V and 220–240V environments)
・Use without a transformer
・Plug incompatibility
・Damage caused by improper setup or usage
■ Liability
We are not responsible for any damage, malfunction, or performance issues caused by improper use or incorrect voltage conditions.
■ Final Notice
Please ensure full understanding of the above before purchasing.
Use only under the correct voltage environment.
Manufactured by the former National Semiconductor (now Texas Instruments).
LM4562 Dual (2-circuit) Ultra-Low Distortion, High Performance
Hi-Fi audio operational amplifier (officially distributed product)
As these are brand new ICs sourced directly from the manufacturer, there is no store warranty.
[Please note] New electronic components do not come with a warranty.
*Using this in the wrong circuit may cause damage.*
Only those with detailed knowledge of electronic components can purchase this item.
This product consists of brand new components sourced directly from TI, and is a new IC that has undergone rigorous quality control by the manufacturer.
Some reviews mention noise interference, but this is a phenomenon caused by someone without the necessary knowledge using this op-amp in a circuit that is not compatible with it, and does not indicate a defect in the IC.
While compatible with other dual-circuit operational amplifiers, it is not fully compatible. Using it in a circuit that does not match the LM4562's characteristics may cause oscillation, resulting in heat generation and noise; however, this is a problem with the circuit itself, not a defect in the IC. Please do not purchase this product if you lack the necessary knowledge.
These are brand new ICs sourced directly from semiconductor manufacturers, therefore we do not offer any warranty. If you claim there is a defect, please contact the manufacturer directly.
This is a genuine LM4562 dual (2-circuit) ultra-low distortion, high-performance, Hi-Fi audio operational amplifier (officially distributed product) manufactured by the former National Semiconductor (now Texas Instruments).
It is well-regarded as a low-noise, ultra-low-distortion operational amplifier for Hi-Fi and high-end audio applications.
There are rumors circulating that this op-amp is the same as the popular "LME49720," which is known for its excellent sound quality after being replaced, so I decided to put it to the test.
The specifications on the datasheet are the same, but what's the reality?!
And the result is...!!!
→We have posted images showing the cores removed and compared, so please take a look.
[Excerpt from the manufacturer's website]
These operational amplifier products feature ultra-low distortion, low noise, and high slew rate, making them optimized for high-performance HiFi applications.
Combining advanced, state-of-the-art process technology with cutting-edge circuit design, this superior audio signal amplifier delivers unparalleled audio performance.
The combination of extremely low voltage noise density and virtually negligible THD+N (0.00003%) easily meets the demands of even the most stringent audio applications.
Please check the manufacturer's website for IC specifications.
[Main Specifications]
- Power supply voltage range: ±2.5 to ±17V
- THD+N (AV = 1, VOUT = 3VRMS, fIN = 1kHz):
- RL = 2kΩ: 0.00003% (typical value)
- RL = 600Ω: 0.00003% (typical value)
- Input noise density: 2.7 nV/√Hz (typical value)
- Slew rate: ±20V/μs (typical value)
- Gain-bandwidth product: 55MHz (typical value)
- Open-loop gain (RL = 600Ω): 140dB (typical value)
- Input bias current: 10nA (typical value)
- Input offset voltage: 0.1mV (typical value)
- DC gain linearity error: 0.000009%
[Notes]
*This is a brand new electronic component distributed through the manufacturer's official channels, therefore there is no warranty.
*DIP operational amplifiers can be damaged if inserted into the socket in the wrong direction.
[Product Specifications]
Unit of sale: 1 piece
Model number: LM4562
Package: DIP-8Pin
Operating voltage: ±2.5V to ±17V
Number of circuits: 2 circuits
Size: Approximately 10mm x 8.2mm x 7.3mm (including protrusions)
Weight: 0.5g
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