Denon HA-1000 Headphone Amplifier For MC Stereo Phono Cartridge japan Audio
- Condition: Used
- Price: 284.07 EUR
- Status: unsold
- Item number: 387012416885
- Seller: pilina2.2.16 (1733|99.3%)
- Seller information: Commercial (with base shop)
- Item location: Funabashi-shi,
- Ships to: Worldwide
- Shipping: 0,0 EUR
- on EBAY
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Description
Denon HA-1000 Headphone Amplifier For MC Stereo Phono Cartridge japan AudioDescriptionExplanation?The HA-1000 uses a separate power supply system with independent power supply units.The main unit is magnetically shielded with silicon steel plates to ensure that the performance of the head amp can be demonstrated under all conditions. The input first stage, which determines the signal-to-noise ratio the most, uses eight PNP-type low-noise transistors in parallel, which have an advantage in terms of voltage noise.The transistors used in the first stage are PNP transistors with low current noise and a voltage noise level of -147.5dB(V) per transistor, which can be said to be the ultimate limit in the current market. The second and subsequent stages are designed to minimize the effects of variations in transistor characteristics and to apply a stable deep NFB, and a special current mirror differential circuit is used in the second stage to achieve high gain.Furthermore, the final stage consists of a Darlington complementary emitter follower circuit with class-A amplification, wide dynamic range, and low output impedance. The voltage gain of the HA-1000 can be switched between two MC cartridge stages (32dB, 24dB) and three stages for MM cartridges (0dB, PASS).In PASS, the input terminal is directly connected to the output terminal, completely jumping the amplifier circuit. Some commercially available MC cartridges have an output impedance of about 100 ohms. In this case, there will be some inductance effects. For this reason, the HA-1000 uses an input impedance of 100 ohms to suppress the avalanche of high frequency response caused by capacitance in the tone arm cord and head amp input. A muting circuit is built in to prevent unwanted noise during switching. A high-cut filter is provided. Block DiagramModel RatingsModel MC Head AmplifierInput impedance 100?Voltage Gain32dB/24dB/MM(Pass)Maximum output level3VrmsInput Converted Noise Level -157dB(V)(RIAA, EQ+IHF-A, Input short circuit)Frequency response 8Hz to 600kHz +0 -1dBHarmonic distortion ratio 0.008% or less (at 0.3V output)Intermodulation distortion ratio 0.008% or less (at 0.3V output, 60Hz:7kHz=4:1)Crosstalk (1kHz) -70dB or lessHigh cut filter 100kHz, -6dB/octPower supply AC100V, 50Hz/60HzPower consumption 10WExternal dimensionsAmplifier section: 125mm (W) x 68mm (H) x 292mm (D)Power supply unit: W107 x H65 x D141mmWeightMain unit: 1.8kgPower supply unit: 1.4kgLow-capacity output cord with attached gold-plated plugCaution (for remote areas)Additional fees may apply for those in remote areas.Shipping Shipping will be by FedEx or EMS.Please contact us if you have any other requests.There are some delays due to the corona.Please understand that it may take some time to arrive. Some countries exclude shipping.Please contact us for more information and we will try to accommodate you. We will ship to the address you have registered with eBay.Please note that we do not respond to requests to change the shipping address after the order is placed.Please do not change your address after shipping.Additional charges will be incurred.Please note that you will be billed if this occurs.If the buyer does not receive the item and returns it to us, the buyer will be responsible for the customs and shipping charges. We ship Monday through Friday.This service is not available on weekends as shipping companies are closed.Please buy with confidence. International Buyers - Please Note:Note: Import duties, taxes and charges are not included in the price of the item or the shipping cost. These charges are the responsibility of the buyer. Please check with your countrys customs office to determine how much these additional costs will be prior to bidding or purchasing.
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