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TEAC HA-501-S (Silver colour- Front view)
TEAC HA-501-S (Silver colour- Front view)

TEAC HA-501 Fully Analog Dual Monaural Headphone Amplifier

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On sale $1,299.99
Retail Price:$1,399.99
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Part Number:713
  • Full analog circuit design
  • Discrete design Class-A Amplifier
  • Dual Monaural design
  • Active DC Servo technology
  • Dual MUSES8920 Op-amps for Left and Right channels
  • 1,400mW + 1,400mW Output Power (at 32 ohms)
  • Damping Factor Selector
  • Over-sized Toroidal-core Power Transformer
  • Full-metal Jacket, Rigid construction
  • A pair of XLR connectors by Neutrik for balanced audio input
  • 2 pair of RCA pin connectors for unbalanced audio input on rear (Gold-plated)
  • 1 stereo audio input on front (1/8" or 3.5mm Stereo Mini Jack)
  • 1 stereo headphone out on front (1/4" or 6.35mm Stereo Jack)
  • 1 pair of RCA pin connectors for stereo unbalanced audio output (Gold-plated)
  • Switchable output line level (Fixed, Variable, Off)
  • +/-15V high voltage operation current achieved high S/N ratio
  • Precisely machined aluminum knobs (Volume, Input Selector, Damping Factor Selector)
  • Auto-muting when headphone plug is disconnected
  • A 3-polar AC socket with a detachable AC cable

Choose Options

Colour Choice
TEAC HA-501 Fully Analog Dual Monaural Headphone Amplifier

In Silver or Black Colour

Everything is Designed to Maximize Headphone Potential. 

Introduce yourself to TEAC’s HA-501, a fully analog, dual monaural headphone amplifier with elegance. Part of the 501 series, this Class-A amplifier delivers superior sound quality, a sleek, modern look, all encased in a rugged but compact design. The HA-501 supplies regular headphone listeners with quality sound, features and adaptable options that cannot be found in regular amplifiers. Pair it with your favorite headphones the same way you would a normal amp with favored speakers and take advantage of DC Servo Technology, Switchable damping Factors, High Output Power, a large Toroidal-Core Power Transformer and relax to your favorite music or radio broadcast.

Award

In Japan, the HA-501 have received some prizes of an audio equipment.
The VGP(Visual Grand Prix) is a prize of equipments of audio and visual that is most famous prize in the market of the AV equipments. The HA-501 received the silver award of the VGP.
The AEx(Audio Excellence Award) is a prize of pure audio equipments. The HA-501 received the AEx award and the AEx extra award.


Main Features
  • A lavishing Class-A Amplifier for superior sound quality. (Full-analog Dual Monaural Discrete design)
  • Active DC Servo Technology to eliminate Offset Electrical Potential, to achieve stable drive.
  • Switchable Damping Factor, to dive diaphragm under the best conditions. (5 positions)
  • 1,400mA/ch (32 ohm loaded) of high output power to drive a high impedance headphones as high as 600 ohms.
  • A Toroidal-Core Power Transformer for stable current supply.
  • Full-metal jacket. Gorgeous aluminum panels for front top and sides. Small footprint fits your desktop.

A headphone Amplifier to Achieve peak headphone performance
In general, a headphone output from conventional hi-fi components does not allow even high-quality headphones to perform at their peak potential. The same way one chooses an amplifier to match with your favorite speakers, it is very important to choose an appropriate headphone amplifier that matches your favorite headphones. A headphone amplifier is a "must-have" listening device for audiophiles.
Active DC Servo Technology for decreased distortion, and discrete Class-A Amplifier
In order to develop a first-class low distotion Class-A headphone amplifier, TEAC held a series of sound evalutions during the development. These tests led to the careful choosing of parts and descrete circuit design. In addition, like most full-size hi-fi components, in order to eliminate Offset Electrical Potential, Active DC Servo Technology is utilized.
Dual Monaural Design that eliminates interference between Left and Right channels
In regards to the circuit design, each channel is completely designed on an individual basis to avoid signal interface to/from another. This contribution eliminates cross-talk, crucial headphone listening.
MUSES8920 Op-Amps - for high-end quality
MUSES8920 Op-Amp chip-sets are designed for high-end audio. Employed individually on the Left and Right channels, they help achieve superior sound. This Op-amp performs superb IV-conversion and is already very well regarded and used in a wide-range of hi-fi components.

A Large Toroidal-core Power Transformer

An over-sized Toroidal-core power transformer is also employed to supply stable current to the every part of the circuit.


Damping Factor Selector to optimize headphones' characteristic

Each pair of headphones has its Damping Factor, a resisting force against non-intentional movement of the diaphram moving air forwards and backwords as sound. The value of the Damping Factor varies model by model, as diaphrams are made by different materials, in different shapes or different construction designs. Since headphones' diaphrams are activated by a very small current compared to conventional speakers, the damping factor increases, the sound is lean and crisp, and has a close relationship with headphones' impedance. Therefore, selecting the right Damping Factor is crucial in order for your headphones to perform at their peak potential. The HA-501 provides 5 selectable Damping Factors, so users have the best suited signal for multiple headphones.

Total 2,800mA of output power drives your high impedance headphones

The HA-501 schieves a remarkable 1,400mW output power per channel at 32 ohms impedance. The divice delivers not only enough power to drive standard headphones with an impedance range from 80 to 250 ohms, but also high-class 600 ohms hi-fi headphones.

Robust Aluminum Body with a Classy Appearance

Re-defining high class hi-fi components, the HA-501 has a small footprint, classy appearance and is constructed with aluminum panels to create an authentic but modern looking hi-fi component. A robust metal construction helps eliminate vibrations that may affect the sound quality. The bottom and sidewalls are formed with a steel chassis, aluminum for the front panel and the rear panel out of steel. In order to ensure it's rugged design, each panel is connected with a beam that runs through the center of the unit. Normally, this type of construction is only for full-size components, particularly CD players that generate inherent motor vibrations. This construction ensures the HA-501 is an authentic hi-fi component that will last you for many years. Choose between a handsome black version and a brilliant silver version to match with any interior or design.

Well-designed User Interface

Another remarkable feature of the HA-501 is the user-friendly design. The firm-torqued volume control allows users to adjust the volume level with ease and precision while the toggle-type power switch assures ON/OFF operation at a glance. Auto-muting function protects your ears from unexpected loud sounds when switching between headphones with different levels of impedance.

Professional grade Input/Output connectors

On the rear panel, a pair of NEUTRIK brand XLR input connectors allow users to connect high-end components or professional audio equipment, while wider-pitch RCA pin jacks allow user to connect large-shaft RCA pin cables from other markets. A detachale type 3-polar power inlet socket is also avalable. On the front, a 3.5mm stereo mini-jack allows users to connect a portable music player such as an iPod, conveniently.

Switchable Output Mode for flexibility

Line output level from the rear panel can be swiched amongst "Fixed Level", "Variable Level (coupled with volume)" and "Off".



Specifications

HA-501 SPECIFICATIONS

Audio Input 
Balanced Input (Rear)1 pair
ConnectorsXLR-3-31 (1:GND, 2:HOT, 3:COLD)
Impedance20k ohms
Sensitivity2Vrms
Line Input (Rear)2 pairs (LINE1, LINE2)
ConnectorsRCA Pin Jack (Gold-plated)
Impedance10k ohms
Sensitivity1Vrms
Auxiliary Input (Front, AUX) 
Connectors1/8" (3.5mm) Stereo Mini Jack
Impedance13k ohms
Sensitivity0.5Vrms
Audio Output 
Headphone Output (Front) 
Connectors1/4" (6.35mm) Stereo Jack
Supported Headphone Impedance16 ohms - 600 ohms
Max Output Level1,400mW + 1,400mW (at 32 ohms)
135mW + 135mW (at 600 ohms)
Rated Output Level600mW + 600mW (at 32 ohms)
34mW + 34mW (at 600 ohms)
THD0.002% (Input 1V, Output 1V, at 32 ohms)
0.01% (Input 1V, Output 600mW, at 32 ohms)
S/N Ratio110dB (RCA Input, 2Vrms 1kHz, A-weighted)
Frequency Response2Hz – 100kHz (+0dB/-3dB)
10Hz – 100kHz (+/-3dB)
Line Output (Rear) 
ConnectorsRCA Pin Jack (Gold-plated)
Impedance100 ohms
Output Level316mV
Output Level SelectorFixed, Variable, Off
Operation Power120V AC, 60Hz (US/Canada)
230V AC 50Hz (UK/Europe)
Power Consumption22W (Standby: 0W)
Operating Temerature+5˚C to +35˚C
+41˚F to +95˚F
Operating Humidity5% to 85% (no condensation)
Storage Temerature-20˚C to +55˚C
-4˚F to +131˚C
Overall Dimensions290 (W) x 81.2 (H) x 244 (D) mm, 11.4" (W) x 3.2" (H) x 9.6" (D)
Net Weight4.1kg, 9 lbs
AccessoriesAC Cable, AC Plug Adapter (3P-2P), Owner's Manual, Warranty Card

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