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Our audio opamp specification
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​DIP8 footprint
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Number of Channels(#): 2
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Slew Rate: 25V / us
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Vn at 1kHz(Typ)(nV/rtHz): 11
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Gain Bandwidth: 20 MHz
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Supply voltage - min: +/-4.5V or 9V Single
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Supply voltage - max: +/-18V or 36V Single
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Input Offset Voltage - typ: +/-1mV
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Input Offset Voltage - max: +/-5mV
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Input Bias Current - typ: 50pA
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Input Offset Current - typ: +/13pA
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Quiescent Current: 12mA
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Supply voltage - min: +/-4.5V or 9V Single
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Supply voltage - max: +/-15V or 30V Single
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Input Offset Voltage - typ : +/-1mV
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Input Offset Voltage - max : +/-5mV
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Input Bias Current - typ : 200nA
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Input Offset Current - typ : +/10nA
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Quiescent Current : 12mA
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Supply voltage - min: +/-4.5V or 9V Single
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Supply voltage - max: +/-18V or 36V Single
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Input Offset Voltage - typ: +/-1mV
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Input Offset Voltage - max: +/-5mV
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Input Bias Current - typ: 50pA
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Input Offset Current - typ: +/13pA
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Quiescent Current: 32mA
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Supply voltage - min: +/-4.5V or 9V Single
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Supply voltage - max: +/-18V or 36V Single
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Input Offset Voltage - typ: +/-1mV
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Input Offset Voltage - max: +/-5mV
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Input Bias Current - typ: 50pA
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Input Offset Current - typ: +/13pA
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Quiescent Current: 40mA
Which audio opamp you should pick?
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NY Cheesecake and Boston Pie audio opamp are creamy and denser. They should fit your taste if you prefer to have simple vocal, chamber music, or HiFi CD.
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Souffle and Kiss Cookie audio opamp are dynamic and lighter. Good for full orchestra, live recording music, and more details song and music.
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Souffle and NY Cheesecake audio opamp will turn your gear into 16 x 9 a much wider stage while Kiss Cookie and Boston Pie audio opamp will only have 4 x 3 big stage.
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Kiss Cookie audio opamp is very good for male vocal.
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The most cost-effective way to upgrade your gear
Upgrade your audio opamp (make sure the voltage supple is correct as Kiss Cookie audio opamp the maximum power input is only +/-15V or 30V single) either immediately before the preamplifier (the output of the Bluetooth decoder, the output of the CD player) or the audio opamp immediately before the amplifier (the last audio opamp of the preamplifier).
More about our audio opamp upgrade hints
We will send you a free DIP-8 raiser for each audio opamp you buy. Try to listen to the difference when this raiser is added and removed. You can decide what should do next.
VERY IMPORTANT - MUST READ
Our audio opamp looks very ugly from the bottom. Don't be scared and don't try to clean it or even remove something like plastic stuck on Souffle or NY Cheesecake audio opamp. THIS IS AN INTENDED design. DON'T ATTEMPT TO CLEAN, INSPECT OR MODIFY IT!!!
Our audio opamp 2nd Hand market
Please download an Android App from Play Store. Android phones with NFC enabled can use this App to validate our audio opamp and see the information about it. The App also provides a sell function. You can list your audio opamp to sell by scanning your audio opamp and enter a correct pin code. If both of them are valid, your audio opamp will be listed and shown on all buyer App. The buyer will notify our system his intention to buy and our system will send you an email about the buyer's intention with buyer email. You can then communicate with the buyer directly. Each listing will be listed for 30 days.
The default pin is 0000. You should change the pin using the App as nobody can list your item to sell without a correct pin that matches the item.
Our audio opamp validation
Although we don't involve in your buy/sell business, we do want to validate the audio opamp is authenticated. You can send your audio opamp to us with a US$10 service charge and a US$9.5 shipping fee (we send your audio opamp to the buyer if the audio opamp is genuine) together with the buyer shipping address for official audio opamp validation. We will inform the buyer about the result and ship out your audio opamp immediately when the result is positive on behalf of you.
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Although Youtube audio is not in HD format, however, we found some of them are good enough to test the audio opamp sound quality. The following clips are used for audio tuning by our engineers.
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How to upgrade Rod Rain Audio Bluetooth receiver
Unscrew 4 screws on the back panel and you can find the only audio opamp is in the DIP8 socket, you can take it out with a suitable tool or even using a small screwdriver.
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Ensure the new audio opamp in the right position (there is a dot marker for pin 1).
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As this receiver has a DC step-up circuit to boost the power input from 12V to +/-12V, therefore it is quite hot when using our audio opamp. This is normal and doesn't be scared!
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How to upgrade Rod Rain Audio Preamplifier
There are 2 audio opamps inside. We have upgraded the 1st stage for you to LME49720HA audio opamp. You only need to unplug the 2nd audio opamp from the socket.
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Plug in our audio opamp will do! Ensure the dot marker is correct.
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Full audio opamp experiment setup
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Digital data from Macbook via USB cable (silver color) connected to Lynepaudio DAC.
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The output of the DAC connected to the Rod Rain receiver via coaxial cable (Rod Rain receiver switched to COA mode in the front panel).
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The output of Rod Rain receiver connected to Ron Rain preamplifier via RCA cable.
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The output of Rod Rain preamplifier connected to the active speaker (I am using Focal Alpha 65).
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How to use Macaron
Clamp the crocodile clip to your gear ground or any RCA connector ground shield. You can listen the difference in 5 seconds! Connecting to different ground points will have different tastes and you need to spend some time on it for fun! You will find your favorite taste by yourself. We have spent a long time on it and quite sure the RCA ground shield of the preamplifier/integrated amplifier input (no matter the left channel or right channel) should be the first point to try.
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It comes with a see-through plastic look rectangular plate and an Acrylic enclosure. You can try leaving it under Macaron for a more specific taste. Check the photo of the product page will give you some idea about it. The rectangular plate tighen the treble only while the Acrylic tighen overall sound shape (the taller it is, the more tighen it is). This is particular good for the gear that need more control on the bass! You will hear each note singing separately when plucking on double bass or cello.
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Recommended Setup!
Very good for classical music.
It creates more sense of space because the boomy bass is fully reshaped as on-point background. The musical details will not be degraded as the very tiny treble play by string instrument will not killed by the boomy bass.
How to use Marshmallow
It is directional! The smaller RCA connector should be the input while the bigger RCA connector should be the output. You can plug in the small RCA connector directly, however, the bigger RCA connector needs to turn 180 degrees anti-clockwise, the input pin is facing you, to unlock. Plugin and turn clockwise to lock.
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If the cable is connected in reverse order, the bass will become looser and slow. However, it can be a simple solution for “too digital system”!
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