Nth Degree Audio

Marantz HD-AMP1 integrated amplifier in Silver finish. Brand-new/unopened.

  • Marantz HD-AMP1 integrated amplifier in Silver finish. Brand-new/unopened.
  • Marantz HD-AMP1 integrated amplifier in Silver finish. Brand-new/unopened.
  • Marantz HD-AMP1 integrated amplifier in Silver finish. Brand-new/unopened.
  • Marantz HD-AMP1 integrated amplifier in Silver finish. Brand-new/unopened.

Nth Degree Audio

Marantz HD-AMP1 integrated amplifier in Silver finish. Brand-new/unopened.


You are looking at a brand-new, unopened, Marantz HD-AMP1 integrated amplifier.

Being brand-new, the Marantz is in perfect condition.

Ships worldwide.


Housed in an elegant compact chassis that occupies just over 1 square foot of desktop or shelf space, the HD-AMP1 is equipped with multiple digital inputs, including 2 optical, 1 coaxial along with 2 USB ports. It features the ability to decode the latest generation lossless high-resolution audio file types, including WAV, AIFF, ALAC, FLAC at up to 24-bit/192-kHz resolution, along with the ability to play MP3, WMA and AAC tracks. The rear panel USB-B port features advanced noise isolation so users can connect a PC or Mac and stream even higher resolution files, up to 32-bit/384-kHz. The HD-AMP1 is equipped with the reference grade ESS SABRE DAC and dual master clock crystals for the widest bandwidth, highest dynamic range and lowest distortion, and the HD-AMP1 can also play DSD hi-res audio tracks including 2.6/5.2/11.2-MHz.

Unique Marantz audio performance with Marantz Musical Digital Filtering

The HD-AMP1 delivers 2x 70 W into 4 Ohms; clearly handling even demanding music parts thanks to an ultra-stable power supply and Marantz exclusive Current Feedback technology. The Dual Crystal Clock and a discrete DAC post filter combined with the company’s highly-acclaimed HDAM pre-amplifier modules make standard counted sound feel like high-resolution audio. A high-current audiophile SABRE D/A-Converter with 384kHz/32bit processing capability is able to reproduce even the smallest details with ease.

Special Class-D Amplifier Concept

The HD-AMP1 is the first ever Marantz Hi-Fi product that incorporated the concept of Class-D amplification. Up to now, switching (Class-D) amplifiers had certain limitations which made them unacceptable for demanding Marantz sound engineers to be used in premium Hi-Fi products. Now, the HD-AMP1 combines the unique Marantz HDAM technologies, the Class-D amplifier concept and an overall feedback loop to guarantee a consistent performance with a wide range of loudspeaker types.

Modern connectivity

The HD-AMP1 not only builds on the famous Marantz sound, it is also highly connectable. Featuring two USB ports, one on the front and one on the back, the HD-AMP1 lets users connect their favorite iDevice or USB drive to the front panel USB port, and a PC or Mac to the rear panel USB-B port to stream high resolution audio tracks. In addition it features advanced noise isolation to guard against digital noise from degrading the high-resolution sound. For even more connectivity, Marantz also included two analog inputs. The USB-B works in asynchronous mode to support not only 384kHz/32bits high-resolution audio but also the DSD 2.8MHz, 5.6MHz and even 11.2MHz formats for maximized performance and the most direct way to enjoy excellent quality. To safeguard quality when connected to a computer, Marantz built extended isolation around the USB-B input to eliminate the chance of high frequency noise generated by the computer entering the HD-AMP1.

Technical Specifications

Compact Integrated Amplifier with digital and analog inputs

High-quality 2x 70W (4 Ohm RMS) switching amplifier

Marantz Current Feedback technology for detailed, natural sound

Exclusive Marantz HDAM-SA2 technology

Marantz Musical Digital Filtering with proprietary DSP filtering and 2 filter options

Plays lossless WAV, AIFF, ALAC, FLAC file types, up to 24-bit/192-kHz via digital inputs

Plays lossless WAV, AIFF, ALAC, FLAC file types up to 32-bit/384-kHz via rear USB

2 x optical, coaxial and USB type B digital inputs capable of 384kHz/32bit high resolution audio including native DSD2.8, DSD5.6 and DSD11.2 support

Plays 2.6/5.2/11.2-MHz DSD files via rear USB

Also plays WMA, MP3, AAC tracks

2 optical and 1 coaxial digital inputs

USB-A front panel port and USB-B rear panel port

USB-B block features advanced noise isolation

Reference grade ESS SABRE 32-bit/384-kHz DAC

Dual Clock for high digital accuracy

Headphone amplifier with HDAM-SA2 and 3 gain/impedance choices

2 Analogue inputs

iDevice and USB drive connectivity

Auto iDevice recharge via front USB

Marantz SPKT-1 premium speaker connectors


U.K.: Shipping will be by DPD (next working day service)

Non-U.K: Shipping will be via major courier

All shipping services fully tracked and insured

The Marantz HD-AMP1 operates on 220-240V, 50/60Hz. This is perfect for the United Kingdom, European Union, Hong Kong, Singapore, Australia and some other countries. Please check this unit will work where you live before bidding.

We do not ship directly to China. If you live in China and wish these amplifiers sent there, please read the text below:



我们公司产品无法直接运输到中国大陆。如果您想参加我们公司物品的拍卖和竞标,请联系我们的中国代理:L.J.E Marketing Ltd.


希望你们能通过代理(L.J.E Marketing Ltd.),购买到合意的产品。



Thanks for looking. Any questions, please ask.

worldwide COURIER shipping