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Accuphase Full Set C-280 Preamplifier + P-800 Power Amplifier Made In Japan ( PL ) (Sold Out)
Hi-Fi 4 Sale - Malaysia / Singapore Audio Forum & Marketplace | www.hifi4sale.net :: Audio & Video Equipment Marketplace :: Audio & Video Equipment: FOR SALE (Pre-owned & Used)
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Accuphase Full Set C-280 Preamplifier + P-800 Power Amplifier Made In Japan ( PL ) (Sold Out)
by stylelaser.com.my Sat Nov 23, 2019 11:03 am
Accuphase Full Set C-280 Preamplifier + P-800 Power Amplifier Made In Japan ( PL ) Used In Excellent Condition. Now Selling At RM33,500. Free Shipping Within West Malaysia.
Please visit www.stylelaser.com.my to find out more products for sale at very special price...
The circuit composition combines the cascode method with all the amplification stage class A push-pull of Accuphase tradition, and improves the basic characteristics before applying NFB.
The cascode connection has little feedback, and good characteristics can be obtained especially at high frequencies. In addition, linearity is maintained up to the operating limit of the element, distortion is reduced, and the SN ratio is improved. By constituting this with a class A push-pull, the linearity and distortion characteristics are further improved, and the basic characteristics before applying NFB are improved.
The basic circuit configuration of the unit amplifier is common, and the circuit configuration common to the head amplifier, equalizer amplifier, and high-level amplifier is adopted. The cascode push-pull differential amplification of the input by 8 elements and the cascode push-pull by 4 elements are basically composed of 3 stages with 3 stages.
Furthermore, the DC servo circuit by IC is carried, the direct current generated in the output is detected, it returns to the input, and the occurrence of DC drift is prevented. Due to this DC servo system and precise design, almost no DC drift is generated, and all signal systems from MC input to output are directly connected to eliminate coloring.
A power-source part uses a power transformer for exclusive use for a right-and-left channel, and has become a mono construction completely independent electrically and structurally.
Moreover, in order to measure low impedance over a wide band, a dedicated constant voltage power supply is installed for every unit amplifier, and it is a total of six multiple power supply systems. Furthermore, the constant voltage power supply part of the equalizer amplifier constitutes a cascode differential amplifier to obtain a high gain and increase the constant voltage effect.
The unit amplifier and the constant voltage power supply are housed in a thick aluminum housing and wired at the shortest distance to prevent the power supply impedance from increasing at high frequencies.
It consists of the balance system which connected two sets of all the push pull drive unit amplifiers to the bridge, and has raised the performance.
The balance system requires a transmission system dedicated to positive and negative signals, but noise entering from the outside is canceled in principle, and distortion generated by the amplifier is also canceled by the output circuit. Signal transmission is possible.
In order to achieve the same performance as the monaural amplifier, the power supply unit employs a power supply dedicated to the left and right independent.
In addition, with two power supplies that simply halve the power capacity, the power supply impedance rises and becomes disadvantageous compared to the single transformer method, so the P-800 employs a large capacity transformer of 1.5 kVA that can be used for stereo alone. , Have enough room.
Furthermore, the filter capacitor has a large capacity of 82,000μFx4 and a total of 328,000μF.
In the output stage of each unit amplifier, the broadband transistor of collector loss (Pc) 130W is adopted by 7-parallel push pull composition, and it is a total of 28 pieces with two units of one channel. For this reason, the total collector loss has reached 3.6kW.
In addition, with respect to switching distortion at the time of small output generated in the output stage, the operating point is set strictly so that each element of PNP and NPN is not cut off (state that no current flows) by the input signal. .
In addition, the P-800 is equipped with a low-load impedance switch using a low-impedance drive system that utilizes the basic characteristics of transistors, and by switching the supply voltage, consideration is given to supplying large power even at low loads. The Thereby, 1 ohm load and 2 ohm load are also supported, and sufficient drive of low impedance, low efficiency flat speaker and electrostatic speaker is enabled by all load correspondence.
MOS FET equivalent to a non-switching Class-A drive is adopted as the preceding stage which drives the last stage, and it constitutes with cascode push pull. Moreover, the front stage which sends a signal to this MOS FET also has Class-A cascode push pull composition.
This has constituted the stable output stage with few distortions from the small output of a noise area to the large output of a rated output.
The class A cascode differential push-pull system is adopted as an input stage.
A cascode circuit is a circuit used for high-frequency amplification, stable operation over a wide frequency band, good input linearity, and a wide dynamic range.
The analog type large-sized power meter which can directly read the power between -60dB-+ 3dB by logarithmic compression is carried.
There is also a switch for turning off the meter and lighting.
The input terminal carries both balanced input and unbalanced input.
It is equipped with a natural persimmon finished sideboard.
An optimal fan is sold separately and can be set inside the sideboard when set in a place where heat dissipation is poor or when driving at high output for a long time.
Interested please feel free to contact:
Peter 012-2536225
Fong 016-3098668
Business hour:
MONDAY - 10AM-7PM
TUESDAY - 10AM-7PM
WEDNESDAY - CLOSED(PASAR MALAM)
THURSDAY - 10AM-7PM
FRIDAY - 10AM-7PM
SATURDAY - 10AM-7PM
SUNDAY - 1PM-6PM
PUBLIC HOLIDAY - 1PM-6PM
Style Online Store 24Hous
Location:
STYLE LASER AUDIO SDN BHD
No.148, Jalan Cerdas, Taman
Connaught, Cheras 56000 Kuala Lumpur
( NEXT TO ALLIANCE BANK )
We buy in your old items in CASH!!
Got something keep at home but seldom use or planning to upgrade?
Items that we buy:
Subwoofer
Integrated Amplifier
Speaker
CD player
AV Receiver
Please Whatsapp the item photo to me and get the price immediately, once confirmed the deal, we will pick up your item from you and pay you in cash.
Accuphase C-280
Accuphase P-800
Thanks for viewing.
www.stylelaser.com.my
Please visit www.stylelaser.com.my to find out more products for sale at very special price...
Accuphase C-280
A stereo preamplifier developed mainly for analog and digital disc playback in response to the advent of digital audio discs.The circuit composition combines the cascode method with all the amplification stage class A push-pull of Accuphase tradition, and improves the basic characteristics before applying NFB.
The cascode connection has little feedback, and good characteristics can be obtained especially at high frequencies. In addition, linearity is maintained up to the operating limit of the element, distortion is reduced, and the SN ratio is improved. By constituting this with a class A push-pull, the linearity and distortion characteristics are further improved, and the basic characteristics before applying NFB are improved.
The basic circuit configuration of the unit amplifier is common, and the circuit configuration common to the head amplifier, equalizer amplifier, and high-level amplifier is adopted. The cascode push-pull differential amplification of the input by 8 elements and the cascode push-pull by 4 elements are basically composed of 3 stages with 3 stages.
Furthermore, the DC servo circuit by IC is carried, the direct current generated in the output is detected, it returns to the input, and the occurrence of DC drift is prevented. Due to this DC servo system and precise design, almost no DC drift is generated, and all signal systems from MC input to output are directly connected to eliminate coloring.
A power-source part uses a power transformer for exclusive use for a right-and-left channel, and has become a mono construction completely independent electrically and structurally.
Moreover, in order to measure low impedance over a wide band, a dedicated constant voltage power supply is installed for every unit amplifier, and it is a total of six multiple power supply systems. Furthermore, the constant voltage power supply part of the equalizer amplifier constitutes a cascode differential amplifier to obtain a high gain and increase the constant voltage effect.
The unit amplifier and the constant voltage power supply are housed in a thick aluminum housing and wired at the shortest distance to prevent the power supply impedance from increasing at high frequencies.
Accuphase P-800
A stereo power amplifier designed to achieve both high quality sound and high output, following the development technology of the M-1000.It consists of the balance system which connected two sets of all the push pull drive unit amplifiers to the bridge, and has raised the performance.
The balance system requires a transmission system dedicated to positive and negative signals, but noise entering from the outside is canceled in principle, and distortion generated by the amplifier is also canceled by the output circuit. Signal transmission is possible.
In order to achieve the same performance as the monaural amplifier, the power supply unit employs a power supply dedicated to the left and right independent.
In addition, with two power supplies that simply halve the power capacity, the power supply impedance rises and becomes disadvantageous compared to the single transformer method, so the P-800 employs a large capacity transformer of 1.5 kVA that can be used for stereo alone. , Have enough room.
Furthermore, the filter capacitor has a large capacity of 82,000μFx4 and a total of 328,000μF.
In the output stage of each unit amplifier, the broadband transistor of collector loss (Pc) 130W is adopted by 7-parallel push pull composition, and it is a total of 28 pieces with two units of one channel. For this reason, the total collector loss has reached 3.6kW.
In addition, with respect to switching distortion at the time of small output generated in the output stage, the operating point is set strictly so that each element of PNP and NPN is not cut off (state that no current flows) by the input signal. .
In addition, the P-800 is equipped with a low-load impedance switch using a low-impedance drive system that utilizes the basic characteristics of transistors, and by switching the supply voltage, consideration is given to supplying large power even at low loads. The Thereby, 1 ohm load and 2 ohm load are also supported, and sufficient drive of low impedance, low efficiency flat speaker and electrostatic speaker is enabled by all load correspondence.
MOS FET equivalent to a non-switching Class-A drive is adopted as the preceding stage which drives the last stage, and it constitutes with cascode push pull. Moreover, the front stage which sends a signal to this MOS FET also has Class-A cascode push pull composition.
This has constituted the stable output stage with few distortions from the small output of a noise area to the large output of a rated output.
The class A cascode differential push-pull system is adopted as an input stage.
A cascode circuit is a circuit used for high-frequency amplification, stable operation over a wide frequency band, good input linearity, and a wide dynamic range.
The analog type large-sized power meter which can directly read the power between -60dB-+ 3dB by logarithmic compression is carried.
There is also a switch for turning off the meter and lighting.
The input terminal carries both balanced input and unbalanced input.
It is equipped with a natural persimmon finished sideboard.
An optimal fan is sold separately and can be set inside the sideboard when set in a place where heat dissipation is poor or when driving at high output for a long time.
Interested please feel free to contact:
Peter 012-2536225
Fong 016-3098668
Business hour:
MONDAY - 10AM-7PM
TUESDAY - 10AM-7PM
WEDNESDAY - CLOSED(PASAR MALAM)
THURSDAY - 10AM-7PM
FRIDAY - 10AM-7PM
SATURDAY - 10AM-7PM
SUNDAY - 1PM-6PM
PUBLIC HOLIDAY - 1PM-6PM
Style Online Store 24Hous
Location:
STYLE LASER AUDIO SDN BHD
No.148, Jalan Cerdas, Taman
Connaught, Cheras 56000 Kuala Lumpur
( NEXT TO ALLIANCE BANK )
We buy in your old items in CASH!!
Got something keep at home but seldom use or planning to upgrade?
Items that we buy:
Subwoofer
Integrated Amplifier
Speaker
CD player
AV Receiver
Please Whatsapp the item photo to me and get the price immediately, once confirmed the deal, we will pick up your item from you and pay you in cash.
Please visit www.stylelaser.com.my to find out more products for sale at very special price..
Accuphase C-280
| Model | Stereo preamplifier | ||||||||||||||||||||||||
| Frequency characteristic |
| ||||||||||||||||||||||||
| Total harmonic distortion (new IHF) | 0.005% (20Hz to 20kHz at all input terminals) | ||||||||||||||||||||||||
| Input sensitivity / impedance (rated output / new IHF output 0.5V) | Disc (Head amp off) MM: 2.0mV / 0.5mV / 47kΩ Disc (Head amp + 26dB): 0.1mV / 0.025mV / 10Ω, 30Ω, 100Ω Disc (Head amp + 32dB): 0.05mV / 0.0125mV / 10Ω, 30Ω, 100Ω Tuner, Line, Tape Play: 126mV / 31.5mV / 20kΩ | ||||||||||||||||||||||||
| Rated output / impedance | Output (unbalanced): 2.0V / 1.0Ω Output (balanced): 2.0V / 600Ω Tape rec: 126mV / 200Ω (at the time of Disc) | ||||||||||||||||||||||||
| S / N / input conversion noise |
| ||||||||||||||||||||||||
| Maximum output level (distortion 0.005%, 20Hz-20kHz) | Output (balanced): 10.0V Output (unbalanced): 10.0V Tape Rec: 19.0V (AD) | ||||||||||||||||||||||||
| Disc maximum input voltage (1kHz, distortion 0.005%) | Disc (Head amp off): 300mV Disc (Head amp + 26dB): 15mV Disc (Head amp + 32dB ): 7.5mV | ||||||||||||||||||||||||
| Minimum load impedance | Output (unbalanced): 1kΩ Tape Rec: 10kΩ | ||||||||||||||||||||||||
| gain | Tuner, Line, Tape Play → output: 24dB Tuner, Line, Tape Play → Tape rec output: 0dB Disc (Head amp off) MM → output: 60dB Disc (Head amp off) MM → Tape rec output: 36dB Head amp is + 26dB, + 32dB switching type | ||||||||||||||||||||||||
| Loudness compensator (volume adjustment -30dB) | 1: + 3dB (100Hz) 2: + 8dB (100Hz), + 6dB (20kHz) | ||||||||||||||||||||||||
| Subsonic filter | 10Hz, -18dB / oct | ||||||||||||||||||||||||
| Attenuator | -20dB, -30dB, -∞ | ||||||||||||||||||||||||
| Semiconductor used | Transistor: 225 FET: 16 IC: 33 Diode: 167 | ||||||||||||||||||||||||
| Power supply | AC100V / 117V / 220V / 240V, 50Hz / 60Hz | ||||||||||||||||||||||||
| power consumption | 75W | ||||||||||||||||||||||||
| External dimensions | Width 468x height 171x depth of 396mm | ||||||||||||||||||||||||
| weight | 18.1kg | ||||||||||||||||||||||||
| Model | Stereo power amplifier | ||||
| Continuous average output (20Hz to 20kHz) |
| ||||
| Total harmonic distortion | 0.05% (1Ω to 4Ω load) 0.01% (4Ω to 16Ω load) | ||||
| IM distortion | 0.003% | ||||
| Frequency characteristic | 20Hz to 20kHz ± 0dB (level control MAX at continuous average output) 0.5Hz to 150kHz +0 -3.0dB (at 1W output, level control MAX) 0.5Hz to 80kHz +0 -3.0dB (at 1W output, level control- (6dB) | ||||
| gain | 28.0dB | ||||
| Load impedance | Normal Load Imp. Operation: 4Ω to 16Ω Low Load Imp. Operation: 1Ω to 4Ω | ||||
| Damping factor | 200 (EIA, 50Hz) | ||||
| Input sensitivity |
| ||||
| Input impedance | Unbalanced input: 20kΩ Balanced input: 40kΩ | ||||
| S / N (A correction) | 125 dB (input short-circuit, continuous average output) 95 dB (input 1 kΩ, 1 W output) | ||||
| Output meter | Logarithmic compression peak display type -60dB to + 3dB and output direct reading scale | ||||
| Semiconductor used | Transistor: 158 pieces FET: 20 pieces IC: 15 pieces Diode: 158 pieces | ||||
| Power supply | AC100V / 117V / 220V / 240V, 50Hz / 60Hz | ||||
| power consumption | 110W + 110W (no input) 550W + 550W (Electrical Appliance and Material Control Law) 740W + 740W (8Ω load rated output) | ||||
| External dimensions | Width 481x height 239 (including legs) x depth 489mm (including rear panel legs) | ||||
| weight | 47.2kg |
Thanks for viewing.
www.stylelaser.com.my
stylelaser.com.my- Dealer\Reseller\Trader\Service Provider
- Number of posts : 1301
Age : 47
Location : Cheras
Registration date : 2018-01-20
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Hi-Fi 4 Sale - Malaysia / Singapore Audio Forum & Marketplace | www.hifi4sale.net :: Audio & Video Equipment Marketplace :: Audio & Video Equipment: FOR SALE (Pre-owned & Used)
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