Beyerdynamic A1 Headphone Amplifier Review

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Beyerdynamic A1 Headphone Amplifier Features Comparison Tables

Beyerdynamic A20 Headphone Amplifier - Silver

Beyerdynamic A20 Headphone Amplifier - Silver

Beyerdynamic A20 Headphone Amplifier - Silver Features

  • ALPS potentiometer for variable volume control, Internal wide-range switching power supply for worldwide use
  • 170 mW / 250 Ω, high-gain RCA input, input signal can be looped through, entirely free from signal-loss thanks to the hard-wired RCA output
  • T.H.D = 0.01 % at 170 mW / 250 Ω, Elegant, wrapped screwless solid all-metal housing
  • Audiophile grade, suitable for all headphones up to 600 Ohms
  • Made in Germany with 2 year Warranty
ALPS potentiometer for variable volume control, Internal wide-range switching power supply for worldwide use 170 mW / 250 , high-gain RCA input, input signal can be looped through, entirely free from signal-loss thanks to the hard-wired RCA output T.H.D = 0.01 % at 170 mW / 250 , Elegant, wrapped screwless solid all-metal housing Audiophile grade, suitable for all headphones up to 600 Ohms Made in Germany with 2 year Warranty

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Beyerdynamic A1 Headphone Amplifier (Discontinued by Manufacturer)

Beyerdynamic A1 Headphone Amplifier (Discontinued by Manufacturer)

Beyerdynamic A1 Headphone Amplifier (Discontinued by Manufacturer) Features

  • Intelligent circuit design with microcontroller capable of 96 kHz Input impedance 50 k Maximum Amplification 18 dB
  • Two stereo audio inputs for two sound sources (RCA) Audio connections -- Headphone socket, 1 Line output
  • Output power 100 mW / 600, 170 mW / 250 ¿. 150 mW / 30 v --
  • T.H.D. 0.001% at 170 mW / 250 -- Mica capacitors only; no ceramic capacitors due to their generation of voltage under stress
  • Very reliable cooling concept; including permanent short circuit protection on the output
The A 1 headphone amplifier has been developed to operate headphones with nominal impedance from 30 to 600 ohms. It provides excellent audio quality with high volume and strong bass response. The special circuit design features an amazingly natural sound reproduction with an excellent resolution and spatiality. The entire circuitry is capable to transmit 96 kHz allowing the transmission of the whole frequency response of a SA-CD or DVD audio. Due to a microprocessor-controlled relay, two high-class stereo sound sources can be selected silently. The volume control is made of solid aluminum with a high-grade ALPS potentiometer inside. The gold-plated RCA connections on the rear allow the connection of audio sources and provide a signal transmission without loss. A large dimensioned toroidal core transformer ensures high fidelity of impulse and dynamics. The combination of selected high-grade components allows even the highest-impedance headphones to be driven flawlessly over the entire frequency range. High impedance at the headphones output ensures the control range of the volume potentiometer to be perfect for low-impedance headphones, too. One input is passively connected with the Lineout of the A 1 to loop through incoming signals even when the A 1 is in stand-by mode. Two blue LEDs on the front display the active signal input, another multicolor LED shows the operating status (stand-by or active).

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BeyerDynamic DT 990 Premium Headphones 600 OHM with Bundle Includes, FiiO E12 Mont Blanc Portable Headphone Amplifier & Lexar 64GB micro SD High-Performance Memory Card

BeyerDynamic DT 990 Premium Headphones 600 OHM with Bundle Includes, FiiO E12 Mont Blanc Portable Headphone Amplifier & Lexar 64GB micro SD High-Performance Memory Card

BeyerDynamic DT 990 Premium Headphones 600 OHM with Bundle Includes, FiiO E12 Mont Blanc Portable Headphone Amplifier & Lexar 64GB micro SD High-Performance Memory Card Features

  • BEYERDYNAMIC AUTHORIZED DEALER With FULL Warranty
  • INCLUDES BONUS FiiO A5 Portable Headphone Amplifier (Titanium) AND 64GB MicroSDXC High-Speed Memory Card
  • ALSO INCLUDES Screwable 6.35 mm / 1/4" Adaptor, Leatherette Carrying Bag
  • THE FAMOUS DT 990 Premium, 600 ohm version; Stereo Headphone for high power requirements, headphone amps, home audio applications. MADE IN GERMANY, innovative "Bass reflex" system for excellent audio performance. OPEN DESIGN, includes carry case, 11 oz light weight.
  • GOLD VAPORIZED stereo 3.5 mm mini-jack & 6.35 mm adapter. TWO-YEAR manufacturer warranty only when purchased from an authorized beyerdynamic dealer.
600 Ohm Version - Designed for High-End Audio Applications The DT 990 Headphones with 600 Ohms proves its power when connected to a hi-fi system at home or with an Amplifier This is the 600 ohm version of the DT 990 Premium line, designed explicitly for high-output usage and headphone amplifiers. Conventional headphones with lower impedance ratings offer higher volumes at the same level of input, but need heavier drivers to compensate for low impedance or risk sounding muddy and distorted. The lower mass of the drivers of a higher-impedance headphone delivers unparalleled clarity and response, but takes more power to achieve the same loudness. So a higher-impedance headphone such as the 600-ohm DT 990 is ideal for use in high-end applications, where clarity and dynamic response are paramount, as well as for use with convenient headphone amplifiers like the beyerdynamic A1. A gold plated 3.5 mm stereo jack with 1/4" inch adapter is included. Open, On-Ear Design with Velour Earpads The DT 990 features an open-back circumaural (over-the-ear) design for rich audio performance that's designed for critical listening. The open design of the headphones allows increased fidelity to the original recording and a more natural sound stage. The driver design of the DT 990 gives your music full reign, with natural response and crisp linearity. You'll hear every note, every beat, and every detail just as the artist originally intended. Dynamic Transducer for Increased Fidelity and Performanc...

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BeyerDynamic DT 880 Premium Headphones 600 OHM (491322) with Slappa HardBody Headphone Case, M-Audio Port. Headphone Amplifier & 32GB MicroSD High-Speed Memory Card

BeyerDynamic DT 880 Premium Headphones 600 OHM (491322) with Slappa HardBody Headphone Case, M-Audio Port. Headphone Amplifier & 32GB MicroSD High-Speed Memory Card

BeyerDynamic DT 880 Premium Headphones 600 OHM (491322) with Slappa HardBody Headphone Case, M-Audio Port. Headphone Amplifier & 32GB MicroSD High-Speed Memory Card Features

  • BeyerDynamic DT 880 Premium Headphones 600 OHM
  • Slappa HardBody PRO Full Sized Headphone Case (Black)
  • FiiO A1 Portable Headphone Amplifier (Silver)
  • 32GB MicroSD High-Speed Memory Card
  • Dynamic Transducer for Increased Fidelity and Performance
Designed for Home Stereo and Relaxed Listening The DT 990 Headphones with 600 Ohms proves its power when connected to a hi-fi system at home or with an Amplifier This is the 600 ohm version of the DT 880 Premium line, designed explicitly for use with dedicated stereo equipment such as home theater systems and headphone amplifiers. Conventional headphones with lower impedance ratings offer higher volumes at the same level of input, but need heavier drivers to compensate for low impedance or risk sounding muddy and distorted. The lower mass of the drivers of a higher-impedance headphone delivers unparalleled clarity and response, but takes more power to achieve the same loudness. So a higher-impedance headphone such as the 250-ohm DT 880 is ideal for use in home stereo applications, where clarity and dynamic response are paramount, as well as for use with high-performance home theater equipment and headphone amplifiers. A gold plated 3.5 mm stereo jack with 1/4" inch adapter is included and is therefore suitable for use with almost all headphone amplifiers. Semi-Open Back Design with Adjustable Headband and Velour Earpads The DT 880's semi-open, over-the-ear design offers slightly increased sound isolation and reduced noise leakage, while retaining the high fidelity normally associated with open-back headphones. The adjustable headband lets you easily create the perfect fit for extended periods of listening comfort. Anywhere you need high-resolution audio performance, the ...

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BeyerDynamic DT 880 Premium Headphones 600 OHM (491322) with Slappa HardBody Headphone Case, FiiO A1 Port. Headphone Amplifier & 32GB MicroSD High-Speed Memory Card

BeyerDynamic DT 880 Premium Headphones 600 OHM (491322) with Slappa HardBody Headphone Case, FiiO A1 Port. Headphone Amplifier & 32GB MicroSD High-Speed Memory Card

BeyerDynamic DT 880 Premium Headphones 600 OHM (491322) with Slappa HardBody Headphone Case, FiiO A1 Port. Headphone Amplifier & 32GB MicroSD High-Speed Memory Card Features

  • BeyerDynamic DT 880 Premium Headphones 600 OHM
  • Slappa HardBody PRO Full Sized Headphone Case (Black)
  • FiiO A1 Portable Headphone Amplifier (Silver)
  • 32GB MicroSD High-Speed Memory Card
  • Dynamic Transducer for Increased Fidelity and Performance
Designed for Home Stereo and Relaxed Listening The DT 990 Headphones with 600 Ohms proves its power when connected to a hi-fi system at home or with an Amplifier This is the 600 ohm version of the DT 880 Premium line, designed explicitly for use with dedicated stereo equipment such as home theater systems and headphone amplifiers. Conventional headphones with lower impedance ratings offer higher volumes at the same level of input, but need heavier drivers to compensate for low impedance or risk sounding muddy and distorted. The lower mass of the drivers of a higher-impedance headphone delivers unparalleled clarity and response, but takes more power to achieve the same loudness. So a higher-impedance headphone such as the 250-ohm DT 880 is ideal for use in home stereo applications, where clarity and dynamic response are paramount, as well as for use with high-performance home theater equipment and headphone amplifiers. A gold plated 3.5 mm stereo jack with 1/4" inch adapter is included and is therefore suitable for use with almost all headphone amplifiers. Semi-Open Back Design with Adjustable Headband and Velour Earpads The DT 880's semi-open, over-the-ear design offers slightly increased sound isolation and reduced noise leakage, while retaining the high fidelity normally associated with open-back headphones. The adjustable headband lets you easily create the perfect fit for extended periods of listening comfort. Anywhere you need high-resolution audio performance, the ...

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Nobsound Portable Headphone Amplifier; Mini HiFi Stereo Audio Amp; Replaceable OP Amp Design with Bulit-in Battery

Nobsound Portable Headphone Amplifier; Mini HiFi Stereo Audio Amp; Replaceable OP Amp Design with Bulit-in Battery

Nobsound Portable Headphone Amplifier; Mini HiFi Stereo Audio Amp; Replaceable OP Amp Design with Bulit-in Battery Features

  • This is a portable headphone amplifier with built-in battery. Its sound output is full of analog style and is sweet and warm especially for vocals. What's more, the background noise is almost inaudible even with the max volume.
  • It adopts replaceable OP Amp design. The original one is MC33078P (the same model as Beyerdynamic A1), which can be replaced by many OP Amps like OPA2134PA / AD712 / LME49720NA / MUSES 8820.
  • Its mini size and portable weight plus its bulit-in battery allow you to bring it with you almost everywhere. With the optimization of our technicians. it offers at least 9h battery life (normally 9-12 h).
  • Comprehensive protection. It has a 2s turn-on delay to avoid damaging the headphone. And when the circuit meet problems, it will cut off the headphone output. It also has a overcharge protection function.
  • 30 days returning service and 3 months replacement service. 1 year warranty and life technical support. If you met any troubles or had any questions, please feel free to contact us.

Functions:

  • Low battery indication: When the battery is low, the power LED will flash every 0.5s.
  • Turn-on delay function: The device has a 2s turn-on delay to connect the headphone output when the power is stable.
  • Headphone protection: When the circuit meet problems, it will cut off the headphone output. And the power LED will flash every 0.2s.
  • Replaceable OP Amp design: Adopting IC socket. The OP Amp is replaceable (supporting standard packaging Dual OP Amp). Ceramic packaging OP Amps are also supported.
  • Full symmetrical power amplifier circuit: It supports high +/- current power supply, and enhances signal-to-noise ratio as well as frequency response. It also supports audio input and USB charging in the same time like being connected to a computer.
  • Charging: Standard Micro USB 5V. The red LED is on while being connected with a power supply (or a computer USB). After about 3.5h charging, the red LED goes out and the charging is completed. The device can work while charging. It will stop charging automatically when the battery is full.

Paramaters:

  • Output power: >= 700mW(32Ω)
  • Suitable headphone impedance: 16-300Ω
  • Total harmonic distortion: < 0.005%
  • Signal-to-noise ratio: >= 120DB
  • Frequency response: 10-30K Hz
  • Bulit-in lithium-polymer battery capacity: 9.6Wh (3.7V/2600mAH)
  • Battry life: > 9h (normally 9-12 h)
  • Charging interface: standard MICRO USB 5V
  • Charging current: 800mA
  • Replaceable OP Amps (a portion): OPA2134PA\OPA2604\OPA2107\AD712\AD827\LME49720NA\MUSES 8820\MUSES 8920\MUSES01\MUSES02
  • Dimensions: 104.5*58.5*14 mm (including knobs)
  • Net weight: 120g

Packing list:

  • 1 * headphone amplifier
  • 1 * USB charging cable
  • 2 * headphone amp cable ties

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Quickbuying New Arrival A1 Headphone Amplifier DIY Set Chassis AMO Module For Beyerdynamic 9.8x12.7cm Amplifier Acoustic Components kit

Quickbuying New Arrival A1 Headphone Amplifier DIY Set Chassis AMO Module For Beyerdynamic 9.8x12.7cm Amplifier Acoustic Components kit

Quickbuying New Arrival A1 Headphone Amplifier DIY Set Chassis AMO Module For Beyerdynamic 9.8x12.7cm Amplifier Acoustic Components kit Features

  • High Quality module diy

Feature:
1.Brand new and high quality
2. Use advanced professional equipment full gold-plated headphone plug to ensure a reliable point of contact
3.Use UPC1237 seat protection, effectively eliminate the impact of sound
4.Minimal contact resistance, small loss of the audio signal.
5. Kit compatible ALPS16,27 potentiometer (recommended to use 10-50K)
6.Board has rectifier filter, the transformer can be directly linked to the circuit board
7.PCB size: 9.8 × 12.7cm
NOTE:
This is DIY Kit,you need to solder it by yourself!
Recommend using a dual 12-18V power supply, the machine consumes 5W,
Recommend the use of high-quality transformer 15-30W. Package include:
1 set DIY A1 Headphone Amplifier module kit

 

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A1 Headphone Protection Amplifier Finished Board Matsushita for Beyerdynamic

A1 Headphone Protection Amplifier Finished Board Matsushita for Beyerdynamic

A1 Headphone Protection Amplifier Finished Board Matsushita for Beyerdynamic Features

    Product Description: Beyerdynamic A1 amp with the original machine amplifying circuit , joined the protection circuit , component essentially the same arguments , Weimar coupling , Cong under electrolysis , ST op amp , main filter with a higher level of gold 105 degrees tonic capacitance (the original machine is 85 degrees Blue Shell) Now using Panasonic Matsushita Electric 105 degrees blue shell pitched frequency capacitance

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    BeyerDynamic DT 990 Premium Headphones 250 OHM (481807) with Slappa HardBody Headphone Case, FiiO A1 Portable Headphone Amplifier (Silver) & 32GB MicroSD High-Speed Memory Card

    BeyerDynamic DT 990 Premium Headphones 250 OHM (481807) with Slappa HardBody Headphone Case, FiiO A1 Portable Headphone Amplifier (Silver) & 32GB MicroSD High-Speed Memory Card

    BeyerDynamic DT 990 Premium Headphones 250 OHM (481807) with Slappa HardBody Headphone Case, FiiO A1 Portable Headphone Amplifier (Silver) & 32GB MicroSD High-Speed Memory Card Features

    • BeyerDynamic DT 990 Premium Headphones 250 OHM
    • Slappa HardBody PRO Full Sized Headphone Case (Black)
    • FiiO A1 Portable Headphone Amplifier (Silver)
    • 32GB MicroSD High-Speed Memory Card
    • Neutral, balanced sound
    The new sophisticated DT 990 is a headphone for enthusiasts and will satisfy you with a perfect sound and comfort. The use of high-quality material and the distinctive design underline the standard of a high end model. The headphone is still handcrafted in Germany warranting a high quality. This is the 250 Ohms version which is suitable for the use with hi-fi systems (as longs as they have a  sufficiently dimensioned headphones output) or with purpose-built headphone amplifiers. For the use with portable devices we recommend the 32 Ohms version. Features Semi-open back design Neutral, balanced sound Robust spring steel headband Single-sided cable Soft headband pad Gold-plated 1/8" mini stereo jack plug (3.5 mm) and 1/4" adapter (6.35 mm) Specifications Transmission type - Wired Headphone design (operating principle) - Semi-open Headphone impedance - 250 ohms Headphone frequency response - 5 - 35.000 Hz Nominal sound pressure level - 96 dB Construction - Circumaural (around the ear) Cable & plug - Stereo jack plug 3.5 mm (1/8") & 1/4" adapter (6.35 mm) Net weight without packaging - 290 g

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    Beyerdynamic T51i Portable Tesla Hi-Fi Headphones Apple-Certified Remote & Mic (715603) with A1 Portable Headphone Amplifier Silver Bundle

    Beyerdynamic T51i Portable Tesla Hi-Fi Headphones Apple-Certified Remote & Mic (715603) with A1 Portable Headphone Amplifier Silver Bundle

    Beyerdynamic T51i Portable Tesla Hi-Fi Headphones Apple-Certified Remote & Mic (715603) with A1 Portable Headphone Amplifier Silver Bundle Features

    • BEYERDYNAMIC AUTHORIZED DEALER With FULL Warranty
    • Beyerdynamic T51i Portable Tesla Hi-Fi Headphones Apple-Certified Remote and Mic
    • 3-BUTTON Apple remote control and microphone for smart phone and media playback, Apple compatible. TESLA TECHNOLOGY with highest efficiency with excellent isolation for undisturbed listening and communication. POWERFUL SOUND QUALITY with brilliant treble and deep bass reproduction.
    • SWIVELING EAR CUPS 90 Degree for easy storage and includes nylon carrying case, 1/4" jack adaptor, In-flight adaptor, and adapter for non Apple compatible devices. 2-YEAR manufacturer warranty only when purchased from an authorized BeyerDynamic dealer.
    • BUNDLE INCLUDES: Wood Headphone Stand, A1 Portable Headphone Amplifier (Silver), 1 Piece Micro Fiber Cloth
    Compact Tesla Sound - Like its sibling T 51 p, the focus for design of the T 51 i is delivering unrivalled sound quality. With new and improved drivers the headphones deliver in an inspiring way right from the first moment. A particularly deep bass response and transparent, clear highs are apparent from the T 51 i due to the common properties that make all Tesla headphones so special: high efficiency and low distortion. The result: a clear, powerful sound across the entire frequency range, even at low levels. The closed design of the T 51 p also isolates external noise very effectively. Works on your iPhone and others - Being an officially licenced product, you can be sure, that the T 51 i works smoothly on your iPod, iPhone or iPad. With the three-button remote and mic, you can use your T 51 i to control calls and media playback. All functions (except the volume up and down) work on other current smartphones and tablet computers as well, including Windows and Android devices. High quality and elegant looks - The shiny beyerdynamic logo on the housing caps stands in sharp contrast with the brushed metal surfaces of the ear-cups. The cable has also been improved to be more stable and has a satin finish which results in less cable noise. A light champagne tone lends the headphones a very elegant appearance and raises the T 51 p above the plastic monotony of most - even more expensive - headphones with its all-metal construction. Perfect to wear - With its metal fully-adjustable...

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    What people says about Beyerdynamic A1 Headphone Amplifier

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