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Hypex Direct PreAmplifier Kit, PreDIGin Add-On, and Nilai500 Stereo Amp Bundle

Hypex DirectPart # 221-0001

Save 30% This Hypex Direct bundle gives you everything needed to build a high-performance DIY stereo preamp and power amplifier system. With the PreAmplifier Kit, PreDIGin digital add-on, and Nilai500 Stereo Amplifier Kit, it combines analog control, digital source flexibility, and powerful stereo amplification in a matched Hypex Direct setup.

Key Features

  • Save over $1,150 by taking advantage of this bundle
  • Complete preamp and stereo amplifier bundle for a full DIY audio system
  • Hypex Direct PreAmplifier Kit provides analog source control with balanced and unbalanced inputs
  • PreDIGin add-on expands the preamp with DAC, Bluetooth, Fusion Connect, and streaming capability
  • Nilai500 Stereo Amplifier Kit provides 300W + 300W stereo amplification
  • Nilai500 amplifier technology delivers ultra-low distortion, very low noise, and very low output impedance
  • Matching matte black Hypex Direct cases for a clean, coordinated system appearance
Similar items that may interest you:
Hypex Direct PreAmplifier Kit
Price: $1,470.00Part # 221-004
Hypex Direct Nilai500 Stereo Amplifier Kit
Price: $1,470.00Part # 221-001
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Overview

Hypex Direct PreAmplifier Kit, PreDIGin Add-On, and Nilai500 Stereo Amp Bundle

Hypex Direct PreAmplifier Kit, PreDIGin Add-On, and Nilai500 Stereo Amp Bundle

Save 30%!

By getting your Hypex Direct PreAmplifier Kit, PreDIGin Add-On, and a Nilai500 Stereo Amp 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 Stereo Amplifier Kit

Experience 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.

PS500

The kit also includes the PS500 power supply, designed for high quality, efficiency, and dependable operation. Both Nilai500 modules share this single power supply. 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.

Smooth Delivery

This kit delivers 250 watts into 2 ohms, 300 watts into 4 ohms, and 260 watts into 8 ohms, making it a strong fit for medium-sized speakers. It offers dynamic, engaging performance that works well across a range of listening environments. For larger and more demanding speaker systems, the Nilai500 mono kit is the better option.

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.

Make It Yours

Ideal for building a high-power stereo 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 stereo 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 stereo 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 stereo kit and enjoy uncompromising sound quality shaped around your preferences.

Features

  • HD+N: 0,00015% (-116dB) @ 100W / 4Ohm / 20.000Hz
  • Output noise: 9,5µV @11,8dB gain
  • Gain adjust in 3 steps (11,8 - 21,8 and 27,8)
  • High fidelity components
  • Discrete buffer stage and regulators
  • Dedicated high-end power supply PS500 included

Specifications

  • Inputs: 1 x Trigger 12V, 2 x Balanced XLR
  • Outputs: 2 x Gold plated binding post set
    (Banana plug, Spade plug or Bare wire)
  • Output Power (2Ω): 2 x 250W
  • Output Power (4Ω): 2 x 300W
  • Output Power (8Ω): 2 x 260W

This Kit Contains

  • Complete stereo case
  • 2x Nilai500 amplifier module
  • 1x PS500 Power Supply
  • Complete internal cable harness
  • Complete mounting set
  • Nilai500 stereo kit user assembly guide
  • Nilai500 stereo kit user manual

Click here to see the Nilai500 Stereo Kit assembled.

PreAmplifier Kit

The 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 PreDIGin Add-on, 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 analogue
  • 2.7” monochrome OLED display
  • Remote control included
  • Modular design
  • Discrete 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 harness
  • Power supply, front board, main board and headphone board
  • All needed mounting materials
  • Assembly instructions
  • 1.5mm Allen key
  • TX-10 Torx key
  • TX-20 Torx key
  • Remote Control (incl. battery)

    • Click here to see the PreAmplifier Kit assembled.

PreDIGin Add-On for PreAmplifier Kit

The 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 DAC

A 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.

Features

InputsSelectable 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 Chips

ADC 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 module
  • FusionConnect board
  • Bluetooth module
  • Complete cable set
  • Back plate
  • All needed mounting materials

Audio Performance Data DAC

All audio measurements are done with AES17 20kHz filter and no weighting.

ItemSymbolMinTypMaxUnitNotes
Output 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 Formats

InputPCM SupportDSD SupportNotes
S/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 Connect

FunctionPCM SupportDSD SupportNotes
S/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 PreAmplifier Kit.

Product Applications

Hypex 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.

Preamplifiers

A 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
1x PreAmplifier Kit

Included
Fully analogue, modular
design, discrete op-amps
1x PreAmplifier Kit
＋ 1x PreDIGin add-on
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
525W1x Nilai500 Mono KitIncluded

180W1x UcD180HG with HXR
＋1x SMPS400A180

400W1x UcD400HG with HXR
＋1x SMPS400A400

525W1x Nilai500
＋1x PS500

800W2x UcD400HG with HXR (BTL)
＋1x SMPS1200A400
No DC error protection
1150W2x Nilai500 (BTL)
＋1x PS500

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 + 300W1x Nilai500 Stereo KitIncluded
1 pcs for a stereo setup
2 x 525W2x Nilai500 Mono Kit
Included
2 pcs for a stereo setup
180 + 180W
2x UcD180HG with HXR＋1x SMPS400A180
for a stereo setup
300 + 300W2x Nilai500
＋1x PS500
for a stereo setup
400 + 400W
2x UcD400HG with HXR
＋1x SMPS1200A400
No DC error protection
1150W + 1150W
4x Nilai500 (BTL)
＋4x PS500
2 pcs for a stereo setup

Multi Channel Amplifier & Immersive Audio

A 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
88x UcD180HG with HXR＋1x SMPS400A180
No DC error protection
180W22x UcD180HG with HXR
＋1x SMPS400A180

180W44x UcD180HG with HXR＋1x SMPS1200A180
No DC error protection
180W
66x UcD180HG with HXR
＋1x SMPS1200A180
No DC error protection
300W22x Nilai500
＋1x PS500

300W44x Nilai500
＋2x PS500

400W
22x UcD400HG with HXR
＋1x SMPS1200A400
No DC error protection
400W44x UcD400HG with HXR
＋1x SMPS1200A400
No DC error protection
400W
66x UcD400HG with HXR
＋1x SMPS3kA400
No DC error protection, reversing
phase for half of the UcD400 modules
400W
88x UcD400HG with HXR
＋1x SMPS3kA400
No DC error protection, reversing
phase for half of the UcD400 modules

Product Details

BrandHypex Direct
Part Number221-0001
UPC848864083940
Weight26.95

Product Specifications

Board Type2 Channel Stereo Amp / Preamp
Power (RMS/Channel 8 ohms)251 - 500 Watts
Special Features2 ohm Stable

Specifications

Q&A

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Manuals & Resources

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