This product is sold brand new. A manufacturer warranty applies only when the manufacturer provides one for this item.
Return requests must be submitted within 14 days of delivery and approved by our RMA department before the item is shipped back. Non-defective returns may be subject to a minimum 25% restocking fee and return shipping charges. Unauthorized returns are not eligible for credit or refund. Read the full return policy.
Hypex Direct PreAmplifier Kit, PreDIGin Add-On, and Two Nilai500 Mono Amps BundleSave 30%!
By getting your Hypex Direct , , and two together as a bundle, you'll save 30% off over buying them separately! To learn more about each product, check out each individual product page or see below.Nilai500 Mono Amplifier KitExperience the power of high-fidelity sound with the Nilai500 Mono Kit, a DIY amplifier solution created for serious audio enthusiasts. Centered around the advanced Nilai500 amplifier module from Hypex Direct, this kit combines outstanding performance, straightforward assembly, and the flexibility to build a premium mono amplifier of your own.
The Nilai500 module is designed to deliver high-end audio performance with low distortion, excellent efficiency, and remarkable linearity for clean, audiophile-quality sound. Its design preserves the accuracy of the audio signal so the subtle details in your music come through with clarity. Hypex Direct’s advanced Nilai® technology also supports high efficiency, helping reduce heat output while improving overall reliability.
PS500The kit also includes the PS500 power supply, designed for high quality, efficiency, and dependable operation. This regulated power supply helps reduce noise and distortion while delivering strong, stable power. By maintaining consistent voltage and current, it avoids the fluctuations that can affect audio performance, resulting in cleaner sound with better dynamics, detail, and clarity.
Power to DeliverThis kit delivers 500 watts into 2 ohms, 525 watts into 4 ohms, and 260 watts into 8 ohms, giving it the ability to drive demanding speakers with confidence while producing dynamic, powerful sound. If that level of output is more than your speakers require, the Nilai500 stereo kit may be a better fit for medium-sized speakers, offering a well-matched balance of power and performance for a range of listening spaces.
No soldering is required. The kit comes with all necessary components and clear instructions, making it approachable for both first-time builders and experienced DIY enthusiasts. A build instruction video is also available under the video tab.
The amplifier can be integrated easily with the rest of your audio system thanks to the 12V trigger input for synchronized power control. A convenient on/off button is also located on the front panel for simple everyday operation.
PersonalizeIdeal for building a high-power dual-mono system or expanding an existing multi-channel audio setup, this kit includes a rear LED switch that makes it easy to adjust the brightness of the front LED so it better suits your room or matches the rest of your system.
Whether you are an audiophile or a hands-on DIY builder, the Nilai500 mono kit offers the satisfaction of creating your own high-performance amplifier with results that feel professionally executed. You get the advantages of Hypex Direct’s advanced Nilai® amplification technology, including lower heat output, greater efficiency, and excellent sound quality.
The Nilai500 mono kit also pairs naturally with the Hypex Direct PreAmplifier, making it easy to assemble a complete high-performance audio system with smooth integration and impressive sound.
Create your own audio centerpiece with the Nilai500 mono kit and enjoy uncompromising sound quality shaped around your preferences.
Features
Ultra Low DistortionVery Low Idle PowerVery Low NoiseVery Low Output ImpedanceIncorporates Audiophile Components
Specifications
Inputs: 1 X Balanced XLR, 1 x Trigger 12VOutputs: 1 x Gold-plated binding post setOutput Power (2Ω): 1 x 500WOutput Power (4Ω): 1 x 525WOutput Power (8Ω): 1 x 260WChannels: 1Automatic input voltage selection: YesMains voltage input: 100-120Vac / 200-240Vac ±10%
This Kit Contains
Complete Hypex Direct Nilai500 mono case “matte black”Complete internal cable harnessPS500 power supplyNilai500 amplifier moduleInput board & Front boardAll needed mounting materialsAssembly instruction1.5mm Allen key2.5mm Allen keyTX-10 Torx keyTX-20 Torx key
PreAmplifier KitThe PreAmplifier Kit is loaded with features created to deliver a high-quality audio and user experience. At its core is a fully analog PreAmplifier design, managed through a 2.7" monochrome display with adjustable brightness and an on-time standby function. A power LED provides clear status indication, while two solid aluminum control knobs offer precise adjustment and add a satisfying tactile element to your system. For added ease of use, the kit also includes a remote control so you can make adjustments from across the room.
Each input on the PreAmplifier includes adjustable gain offset, allowing you to tailor audio levels to better suit your preferences. The kit can also be expanded with the , adding a DAC, Fusion Connect board, Bluetooth input board, and streaming capability.
One of the most appealing aspects of the PreAmplifier Kit is the way it combines high-end quality with the hands-on satisfaction of a DIY build. Putting the amplifier together not only gives you a rewarding sense of accomplishment, but also offers a better understanding of the technology behind your audio gear. The kit is designed to be approachable, with clear instructions that walk you through the assembly process. Most users can complete the build in less than an hour, making it a manageable project even for those new to DIY electronics. An online instructional video is also available for extra support, providing a visual step-by-step guide to help the process go smoothly.
The PreAmplifier Kit has a clean, modern look with a matte black finish that complements a wide range of audio systems. Its enclosure is made from durable, high-grade aluminum, giving it the strength to handle regular use while keeping its appearance intact. This solid construction helps the preamplifier deliver reliable performance while maintaining its visual appeal over time.
Features
Fully analogue2.7” monochrome OLED displayRemote control includedModular designDiscrete op-amps & voltage regulators
Specifications
Inputs: One set female XLR stereo balanced analog input, Two sets RCA unbalanced analog inputs Outputs: One 6.35mm headphone output (front), One XLR 4 pole headphone output (front), Two dual 3.5mm TS 12V output trigger ports, Two sets male XLR stereo balanced outputs Automatic input voltage selection: Yes Standby Power: less than 0,5W HxR Ready: On board Mains voltage input: 100-120Vac / 200-240Vac ±10% OpAmp: Discrete Compatible SMPS: Included in kit
This Kit Contains
Complete Hypex Direct PreAmplifier case “matte black”Complete internal cable harnessPower supply, front board, main board and headphone boardAll needed mounting materialsAssembly instructions1.5mm Allen keyTX-10 Torx keyTX-20 Torx keyRemote Control (incl. battery)
PreDIGin Add-On for PreAmplifier KitThe PreDIGin add-on is made to fully complement the PreAmplifier Kit. Serving as its digital counterpart, PreDIGin is built for audio enthusiasts who want the best possible listening experience. At its core is advanced technology, featuring high-quality components such as the AK5574 ADC IC, dual CS43198 DAC ICs running in mono mode, the SRC4392 for high-performance sample rate conversion, and the ADSP21489 DSP for sophisticated signal processing.
An Exceptional DACA defining strength of the PreDIGin is its outstanding DAC performance. With a 14 dBu output level, distortion of an impressive -117.5 dB, a signal-to-noise ratio of 128.5 dB, and a dynamic range of 127 dB, the PreDIGin delivers exceptionally clean audio reproduction that captures the fine detail in your favorite music.
Flexibility is another major advantage of the PreDIGin, with support for a broad range of audio formats and connection options. Whether you use traditional inputs such as S/PDIF, Optical, and AES/EBU up to 192 kHz/24-bit, or more advanced digital connections like USB Type-B and Network1 up to 384 kHz/32-bit, the PreDIGin is built to accommodate them. Bluetooth support at 48 kHz/16-bit also adds a convenient wireless streaming option.
The PreDIGin add-on also includes a network option with an internal USB audio input. Users need to purchase and install a Raspberry Pi inside the DIY PreAmplifier, with support for models 2 through 5 and a dedicated space already provided. The Raspberry Pi acts as the internal processor and works alongside the software you choose. Since several software options are available, each with its own pros and cons, it is worth selecting the one that best fits your needs.
For users who want to push their audio system further, the PreDIGin also includes a FusionConnect board. This optional feature allows the PreAmplifier Kit to serve as the master device in a FusionAmp system, offering smoother integration and greater control across your FusionAmp-based setup.
With its strong performance, broad versatility, and forward-thinking features, the PreDIGin raises the bar for DIY audio enthusiasts. Bring out the full potential of the PreAmplifier and take your listening experience further with the PreDIGin add-on.
FeaturesInputsSelectable DAC-filters FusionConnect S/PDIF Fast, low lat. (default) Master in master/slave setup OpticalFast, linear Digital put-through analog output of pre-amplifier (via ADC) USBSlow, low latency
AES/EBUSlow, linear
BluetoothNon oversampling
Network
Used ChipsADC IC AK5574 (4-to-2 mode) Used for FusionConnect DAC ICs Dual CS43198 Two CS43198 in mono mode SRCSRC4392
DSP DSP Used for DSD-decoding FusionConnect This Kit Contains
Mainboard with DAC moduleFusionConnect boardBluetooth moduleComplete cable setBack plateAll needed mounting materials
Audio Performance Data DACAll audio measurements are done with AES17 20kHz filter and no weighting.
ItemSymbolMinTypMaxUnitNotesOutput level Vout
14dBu(4.1 Vrms) Distortion THD+N
-117.5 dB(@ 0 dBFS) Signal-to-Noise ratio SNR
128.5dB
Dynamic range DR
127dB
Channel crosstalk
-147dB
Supported FormatsInputPCM SupportDSD SupportNotesS/PDIF Up to 192 kHz / 24 bits No Optical (Toslink) Up to 192 kHz / 24 bits No USB type B Up to 384 kHz / 32 bits DoP: up to DSD256 Native: up to DSD256
Network Up to 384 kHz / 32 bits DoP: up to DSD256 Native: up to DSD256 Note 1 Bluetooth 48 kHz / 16 bits No AES/EBUUp to 192 kHz / 24 bits No Note 1: An additional internally installed streaming board is connected to an internal USB port of the digital input board. Supported formats depend on the chosen streaming board and software.
Fusion ConnectFunctionPCM SupportDSD SupportNotesS/PDIF (Output) 93.75 kHz / 24 bits NoNote 2 Note 2: All formats, PCM and DSD, are converted to PCM 93.75 kHz
Please note: This product is only compatible with the .
Product ApplicationsHypex Direct products can be used in a wide range of DIY applications. Explore the different examples within each application category to help find the right solution for your project.
PreamplifiersA preamplifier boosts low-level signals up to line level, which is the standard operating level required by your power amplifier. That means a preamp is needed for nearly any audio source. In addition to raising low-level signals, a preamplifier also manages source switching and volume control for line-level inputs.
Examples of available preamplifier solutions:
Available solutions
Switch Mode Power Supply Notes
Included Fully analogue, modular design, discrete op-amps
＋ Included Analogue and digital, modular design, discrete op-amps Mono Power Amplifier A mono power amplifier is a self-contained single-channel amplifier unit with its own dedicated power supply and matched amplifier section. Mono power amps are often regarded as one of the best ways to build a high-quality amplifier system. They are commonly used in Hi-Fi and high-end audio systems, but they can also serve in musical instrument amplifier applications.
Examples of available mono power amplifier solutions:
Output Power (4Ω) Available solutions Switch Mode Power Supply Notes 525WIncluded
180W ＋
400W ＋
525W ＋
800W ＋ No DC error protection 1150W ＋
Stereo / Dual Power Amplifier A dual power amplifier contains two power supplies and two amplifier channels, with each channel running from its own dedicated power supply. Both the power supplies and amplifier sections are housed within a single enclosure. A stereo power amplifier uses one power supply to run two amplifier channels within the same enclosure.
Examples of available stereo / dual power amplifier solutions:
Output Power (4Ω) Available solutions Switch Mode Power Supply Notes 300 + 300WIncluded 1 pcs for a stereo setup 2 x 525W Included 2 pcs for a stereo setup 180 + 180W ＋ for a stereo setup 300 + 300W ＋ for a stereo setup 400 + 400W
＋ No DC error protection 1150W + 1150W
＋ 2 pcs for a stereo setup Multi Channel Amplifier & Immersive AudioA multichannel amplifier houses multiple amplifier channels within a single enclosure. Common multichannel designs include 4, 8, 16, or even 24 channels. Most use a single power supply, though some models may include two or more power supplies depending on the number of channels and the power demands.
Examples of available multichannel amplifier solutions:
Output Power (4Ω) Channels Available solutions Switch Mode Power Supply Notes 150W 8＋ No DC error protection180W2 ＋
180W4＋ No DC error protection 180W 6 ＋ No DC error protection 300W2 ＋
300W4 ＋
400W 2 ＋ No DC error protection 400W4 ＋ No DC error protection 400W 6 ＋ No DC error protection, reversing phase for half of the UcD400 modules 400W 8 ＋ No DC error protection, reversing phase for half of the UcD400 modules
This product is sold brand new. A manufacturer warranty applies only when the manufacturer provides one for this item.
Return requests must be submitted within 14 days of delivery and approved by our RMA department before the item is shipped back. Non-defective returns may be subject to a minimum 25% restocking fee and return shipping charges. Unauthorized returns are not eligible for credit or refund. Read the full return policy.