{"product_id":"leafaudio-lc9-class-a-high-current-dual-op-amp-160ma-maximum-output-mini-size-opa2828-ada4625-upgrade","title":"LeafAudio LC9 Class A High Current Dual Op-Amp 160mA Maximum Output Mini Size OPA2828\/ADA4625 Upgrade","description":"\u003cp\u003e\u003cb\u003eDescription:\u003c\/b\u003e\u003cbr\u003eNew LC9 (Dual) Op-Amp Modules\u003cbr\u003e* New mini-version low-noise, low-distortion discrete op-amps, suitable for pre-amplification, DAC IV conversion, LPF filters, and other applications.\u003cbr\u003e* Uses 2 expensive low-noise JFET 2SK2145 for input differential amplification, with matched transistors (for ON) as a mirror current source, and 1% precision resistors. Even without an adjustable potentiometer, the output offset voltage remains extremely low (\u0026lt;10mV).\u003cbr\u003e* Megaohm-level high-impedance input, enhancing weak signal collection for preserved detail while maintaining low noise and distortion. Measured THD+N: 0.00005% at 1kHz (instrument self-distortion + noise: 0.00006%).\u003cbr\u003e* High signal-to-noise ratio and dynamic range, up to 140dB (at 10V RMS output).\u003cbr\u003e* High output current: distortion is less than 0.002% at 100mA output current — 10x lower than previous modules. Ordinary op-amps would burn out or activate protection at this current level.\u003cbr\u003e* High compatibility: usable in IV, LPF, and amplifier circuits; stable even as a unity-gain buffer.\u003cbr\u003e* Operating Voltage: ±9V to ±22V\u003cbr\u003e* Operating Current: ±30mA (dual op-amp)\u003cbr\u003e\u003cb\u003e\u003cbr\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e* Compact size with high current capability, ideal for replacing components in devices with limited vertical space.\u003cbr\u003e* Dimensions: Width: 18.5mm, Length: 19.5mm, Height: 9mm (excluding pin length)\u003cbr\u003e* Thickened, anti-loosening gold-plated pins. Unlike other modules that use thin pins prone to poor contact due to loose connections, this design ensures reliable electrical contact.\u003cbr\u003e* Audio-specific transistors\u003cbr\u003e* Gold-plated thickened pins\u003cbr\u003e* Matched transistor pair (USA) for ON Semiconductor\u003cbr\u003e* Matched audio MOSFET pair (operating in Class A high-current mode)\u003cbr\u003e* Medium-power high-current output transistors\u003cbr\u003e* Quality Assurance: Every module is tested for distortion, signal-to-noise ratio, and output DC offset before shipping. You may purchase with confidence.\u003cbr\u003e* Sound Characteristics: Presents a stable, full-bodied sound with deep bass extension, excellent dynamic speed, and significantly improved resolution and density compared to the previous generation LC5\/LC6 series. It also delivers lower noise and distortion.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAttention:\u003c\/b\u003e\u003cbr\u003e* Orientation: The module has a specific direction, with pins 1–8 marked on the PCB. Pin 1 is indicated by a dot, and must not be installed backwards (Pin 1 should align with the first hole at the bottom-left corner of the op-amp socket notch. We are not responsible for damage to other equipment caused by reverse installation).\u003cbr\u003e* Heat Generation: The module operates in Class A mode, so normal heating during operation is expected (heating is more pronounced above ±15V).\u003cbr\u003e* Current Requirements: The module draws significant current (±30mA per rail). Confirm your circuit has sufficient current capacity, especially when using multiple op-amps.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eCompatibility:\u003c\/b\u003e\u003cbr\u003eDesigned for use with LeafAudio's DACs:\u003cbr\u003e* CMD27: 3 dual op-amps\u003cbr\u003e* CMD28: 4 dual op-amps + 2 single op-amps\u003cbr\u003e* CMD29: 4 dual op-amps + 2 single op-amps\u003cbr\u003e* CMD30se: 4 dual op-amps + 4 single op-amps\u003cbr\u003e* CMD32: 6 dual op-amps + 2 single op-amps\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003cbr\u003e* Model: LC9\u003cbr\u003e* Noise: 5nV\u003cbr\u003e* Op-Amp Type: Dual Op-Amp\u003cbr\u003e* Signal-to-Noise Ratio: 140dB\u003cbr\u003e* Channel Separation: -132dB\u003cbr\u003e* THD+N: 0.00005% (Note: This includes both distortion and noise, unlike typical op-amp specs that only list distortion. AP555 instrument loopback distortion is 0.00006%, measured at 0.00009% after amplification by this op-amp.)\u003cbr\u003e* Output DC Offset Voltage: \u0026lt; 10mV\u003cbr\u003e* Operating Voltage: ±10V to ±22V\u003cbr\u003e* Frequency Response: 0–100kHz ±0.1dB\u003cbr\u003e* Quiescent Current: 16mA (16mA per rail)\u003cbr\u003e* Maximum Output Current: 160mA\u003cbr\u003e* Slew Rate: 20V\/µs\u003cbr\u003e* Package Type: DIP\u003cbr\u003e* Pin Count: 8 (Thickened anti-loosening gold-plated pins)\u003cbr\u003e* Dimensions: 18.5mm x 19.5mm x 9mm (excluding pins)\u003cbr\u003e\u003cbr\u003e\u003cb\u003ePacking List:\u003c\/b\u003e\u003cbr\u003e* 1 x OP-Amp Module\u003cbr\u003e\u003cbr\u003e\u003cb\u003ePackaging Details:\u003c\/b\u003e\u003cbr\u003e* Package weight: 0.15kg\u003cbr\u003e\u003cbr\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/102340\/102350-01.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/102340\/102350-02.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/102340\/102350-03.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/102340\/102350-04.jpg\"\u003e\u003cbr\u003e\u003cbr\u003eThe following test data is for the LC9 dual op-amp, measured using an APx555B audio analyzer. The FFT spectrum shows rich even-order harmonics and extremely low high-frequency distortion. (LC9 and LC10 have identical performance; the only difference is single vs dual op-amp configuration.)\u003cbr\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/102340\/102350-05.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/102340\/102350-06.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/102340\/102350-07.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/102340\/102350-08.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/102340\/102350-09.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/102340\/102350-10.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1125px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/102340\/102350-11.jpg\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Thanksbuyer Online,SDR Radio, Testers and Measurement devices, Astronomy products, Audio Amplifer and Decoders","offers":[{"title":"Default Title","offer_id":41029131075633,"sku":"102350","price":18.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0578\/4790\/6353\/files\/1779760452-2.jpg?v=1780393048","url":"https:\/\/www.thanksbuyer.com\/ja\/products\/leafaudio-lc9-class-a-high-current-dual-op-amp-160ma-maximum-output-mini-size-opa2828-ada4625-upgrade","provider":"Thanksbuyer Online,SDR Radio, Testers and Measurement devices, Astronomy products,  Audio Amplifer and Decoders","version":"1.0","type":"link"}