Content | Multi Channels output Speaker System
Professional Digital Karaoke IC
Double Ring transformer
Professional electrolytic capacitance
Best Zero distortion enlarging circuit
Specifications
1. FM 87.5MHz - 108.5MHz
2. Home/car amplifier with remote
3. Projector sound player professional audio amplifier
4. Bulid in SD and USB reader
5. Spk out protection
MODEL AV-339A POWER AMPLIFIER
Name Technology parameters
Supply only input AC220V / DC 12V/5A
Output power(R. M. S) 20WX2
Frequency response 20Hz-20KHz
Input sensitivity 0.25mv-250mv
Input impedance 47K
S/N Ratio ≥ 89dB
Harmonic distortion ≤ 3%
Tone control section
Bass control ± 10dB
Treble control ± 10dB
Front Panel Function Description
1,FM/MP3 Function Display
2,SD/MMC&U disk input jack
3,INPUT,FM/MP3 select Key
VOL- key
SCAN key
VOL+ key
MODE Key
4,Meter indicator
5,Power-Power switch(Turn ON/OFF unit Power)
6,Main Channel Bass adjust knob
7,Main Channel Treble adjust knob
8,Main Channel Volume adjust knob
10,Microphone ECHO REP ADJUST KNOB
11,Microphone Bass adjust knob
12,Microphone Treble adjust knob
13,Microphone Volume adjust knob
14:Mic1 Mic2-Microphone input jack
15:CD/VCD;USB/SD AUDIO INPUT
16:CD/VCD INPUT LED indicator
17:USB/SD/FM INPUT LED indicator
Back Panel Function Description
1,CD/VCD(AUX)-Audio input
2,Recording/Audio Line output terminal
3,Speaker System output right channel
4,Speaker System output left channel
5,External 12V DC input power terminal
6,AC220V/50Hz power input
7,FM antenna(full length:58cm)
What's in the Box
1pcs AV-339 Amplifier
1pcs User Manual
1pcs Remote Control |
The 851W has class XD amplification at 200W into 8 Ohms in stereo mode or 500W RMS per amp in mono bridged mode, separate toroidal transformers for the power amp and input/other circuitry, and terrapin impedance buffering modules. All in all it\'s the best sounding amplifier we have ever made.
Our proprietary Class XD amplification Separate toroidal transformers for power amp and input/other circuitry Our bespoke Terrapin impedance buffering modules – separating amplifier and signal impedance 200W into 8 Ohms stereo mode or 500W RMS per amp mono bridged mode CAP5 protection from DC spikes, overheating and clipping All metal chassis with premium components Remote Control – Compatible with the entire 851 range
Power output – stereo/mono 200W per channel into 8 Ohms 350W per channel into 4 Ohms Power output – bridged mono 500W 8 Ohms 800W 4 Ohms THD (unweighted) < 0.001% 1 kHz < 0.005% 20 Hz - 20 kHz Frequency response 5Hz – 80kHz S/N ratio (ref 1W / 8 Ohn) >90dB (unweighted) Sensitivity – stereo or mono 1.5V rms unbalanced 1.5 + 1.5V rms balanced Sensitivity – bridged mono 0.775V rms unbalanced 0.775V + 0.775V rms balanced Input impedances Balanced input 38 kOhm Unbalanced input 68 kOhm Power amp damping factor > 110 at 1 kHz Max. power consumption 2400W Standby power consumption Standby |
Advanced original amplifier circuitry and elimination of signal loss—resulting in a truly
emotional and dynamic sound. This is a high-grade integrated amplifier that has inherited
the new sound of Yamaha in the pursuit of rich musicality..
- Floating and Balanced Power Amplifier with MOSFETs
- All-stage fully discrete construction, balanced transmission and low impedance design
- Superior quality electronic volume control for optimum sound
- Large capacity power supply unit delivers energetic, dynamic sound with fast response
- Symmetrical design in pursuit of ideal stereo reproduction
- Discretely configured phono amp
- Headphone amp with fully discrete configuration
- Level meters visually reflect the dynamics in the music
- Elegant design with luxurious real wood panels
- Original speaker terminals combine ease of use and beauty with high sound quality
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High rigidity metal frame
Shielded high current power supply
• 500VA toroidal transformer
• 80.000uF capacitor bank
• Rubber insulated aluminium feet
• WBT connector on unbalanced input
• Neutrik connector on balanced input
• Fully discrete analogue design
• Onsemi MJL1302/3281 power transistor
• Low overall feedback
• High stability on capacitive loads
• White Gold cable on output connection
• 100W/8Ohm power unit and double the
power on 4 Ohm until 390W on 2Ohm; a
big power reserve that allows to drive any loudspeakers even in a big room.
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Toroidal Transformer
We mount the premium toroidal transformer centrally, to reduce flux or magnetic disturbance from the volume pot.
Dynamic Thermal Tracking transistors
The output power transistors used by the CXA60 are not your usual common or garden offerings. They come with an integrated Dynamic Thermal Tracking System. So what does this mean? Normally a Power Output transistor utilises a thermo-coupler attached directly to the heat sink of the amp; this informs the system so that it can re-bias when key temperatures are reached. However, using Integrated Dynamic Thermal tracking provides a far more accurate reading of the real temperature of a transistor, and relays it faster too because itʼs not a delayed heating effect. This enables us to bias the amplifier more accurately and in almost real time. Which means your CXA60 is always running at optimum performance.
Musical Subwoofer output
If you want to use a subwoofer as part of your speaker complement, the CXA60 doesnʼt penalise you for it. Because we want to ensure thereʼs no unnecessary high frequency noise affecting the subwoofer, weʼve put the output filter at 3kHz. This is high enough to prevent any phase shift associated with the low pass filter affecting what happens below 200Hz. The result is a phase linear subwoofer output signal which is clean and musical.
Fully balanced signal management
Thereʼs some revolutionary signal management happening beneath the lid of the CXA60. For the first time, our engineers decided to go fully balanced rather than single-ended all the way through. As a consequence, any noise that that might be picked up in the audio signal while routing through the amplifier is cancelled before itʼs output.
Reinventing the signal path
The CX range represents a step change in the way our engineers have approached signal path design, and the result is one of our most musical and entertaining amplifiers yet. Previously, we went to almost surgical lengths to minimise distortion in order to get the best results. This invariably meant 46 components sat in the signal path. For the CX Series, we wanted to dramatically reduce that component count. The CXA60 now has only 24 components in the signal path. The big difference is that there are now 500 support components as well.
Their job is to guarantee those 24 key components are absolutely optimal all the time, regardless of mains fluctuations and other influences. This has made a big difference when it comes to tuning. Previously, tweaking one of the 46 components only made a small difference and it was sometimes difficult to quantify exactly what difference any change made. With the CX series, those 24 components have now actually become quite critical. Changing just one affects the character of the amplifier. We can hear very clearly what each of those components is doing.
This revision has fundamentally changed the character of the amplifier. Listening to a CX series amplifier is fun, engaging and exciting.
Bespoke Bluetooth
If you want to use your CXA60 with a Bluetooth source, we offer an optional BT100 audio receiver. To ensure that this does not interfere with other components in the amplifier, itʼs isolated internally on the digital input board. From the ground up, this is an audiophile Bluetooth device. All the coding for the BT100 is done in-house. We even include an extension cable which enables you get the best Bluetooth range.
Embracing classic design
Sometimes thereʼs a good reason to keep things uncomplicated. The CXA60 features a high-quality damped metal chassis, designed to ensure that nothing rattles or interferes with the electronics. Weʼve also kept volume control simple. The CXA60 uses a logarithmic ALPS pot. And when it comes to switching inputs, the CXA60 uses relay switching with silver plated contacts. This classic approach is still the best way to move signals around, rather than with transistors or electronic switches.
- Power output:60W RMS into 8 Ohms, 90W RMS into 4 Ohms
- DAC:Wolfson WM8740
- Frequency Response:
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Designed for excellent sound quality, with a beautiful appearance.
An integrated amplifier with the advantage of digital input.
ToP-ART (Total Purity Audio Reproduction Technology) and high quality parts
- I/O (input to output) Direct Symmetrical Design
- ART (Anti-Resolution and Tough) Base
- Custom-made power transformer / 6,800uF block capacitors / Aluminum-extruded heat sinks
95W x 2 (max), 60W x 2 (RMS) high power output
Pure Direct Mode for Greater Sound Purity
Continuous Variable Loudness Control
Digital audio inputs for TV or Blu-ray Player
Connection for YBA-11 Bluetooth Wireless Adapter
Simple yet sophisticated design (aluminium front panel and knobs)
Auto Power Standby |
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