| 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 | High sound quality and sophisticated design based on Yamaha\'s rich experience and high-end model concepts. A HiFi Amplifi er for enjoying excellent sound.
- Yamaha high sound quality, created by rich experience and tradition, and high technological expertise
- Pure Direct Mode for greater sound purity
- Simple and sophisticated design
- Phono MM terminal for vinyl playback
- Screw-type speaker terminals
- Speaker selector and speaker terminals for two systems
- Simple design remote control
- Head phone terminal
Specs
Receiver / Integrated Amplifier
| Maximum Power (4 ohms, 1kHz, 0.7% THD, for Europe) |
140 W + 140 W |
| Maximum Power(8 ohms, 1 kHz, 10% THD) |
100 W + 100 W |
| High Dynamic Power/Channel (8/6/4/2 ohms) |
125 W/150 W/165 W/180 W |
| Frequency Response |
10 Hz-100 kHz(0 ± 0.5 dB / 0 ± 3.0 dB) |
| Total Harmonic Distortion (CD to Sp Out, 20 Hz-20 kHz) |
0.2% |
| Signal-to-Noise Ratio (CD) |
100 dB (S: 500 mV) |
| Input Sensitivity (CD) |
500 mV / 47 k-ohms |
| Standby Power Consumption |
0.5 W |
| Dimensions (W x H x D) |
435 x 141 x 333 mm; 17-1/8" x 5-1/2" x 13-1/8“ |
| Weight |
6.7 kg; 14.8 lbs. |
|
Choosing the DAC
Both our CXA60 and CXA80 amplifiers employ the same Wolfson WM8740 DAC, and thereʼs a very good reason for that: it sounds superb! There are more recent Wolfson DACs in circulation, however none sound quite as great as the WM8740 in our view. Which is why, time and again, we choose them.
Two-into-one transformer
The CXA80 utilises two separate windings on the oversize toroidal transformer. In effect, this is like having two toroidal transformers wound onto one chassis, providing separate windings for each amplification module. If you get a huge transient in the right channel, it wonʼt unsettle whatʼs going on in the left. The current is being drawn from a different path, rather than a common path, so the output is stable and remains unflustered, whether your liking is for Little Richard or Lamb of God.
Dynamic Thermal Tracking transistors
The transistors used by the CXA80 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 rebias 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 CXA80 is always running at optimum performance.
Musical Subwoofer output
If you want to use a subwoofer as part of your speaker complement, the CXA80 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.
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 CXA80 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.
High resolution asynchronous USB
In order to offer 24-bit 192kHz resolution via asynchronous USB we use a specialist XMOS device dedicated to the USB input. Weʼve also written a custom driver to allow PC users to access the higher sample rates available in USB Audio 2 mode. This bespoke code allows us to stream audio files at the highest possible resolution.
Bespoke Bluetooth
If you want to use your CXA80 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, including the aptX implementation, 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 CXA80 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 CXA80 uses a logarithmic ALPS pot. And when it comes to switching inputs, the CXA80 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:80W RMS into 8 Ohms, 120W RMS into 4 Ohms
- DAC:Wolfson WM8740
- Frequency Response:
| High sound quality and sophisticated design based on Yamahaʼs rich experience and high-end model concepts. A HiFi Amplifi er for enjoying excellent sound.
- Yamaha high sound quality, created by rich experience and tradition, and high technological expertise
- Pure Direct Mode for greater sound purity
- Simple and sophisticated design
- Phono MM terminal for vinyl playback
- Screw-type speaker terminals
- Speaker selector and speaker terminals for two systems
- Simple design remote control
- Head phone terminal
|
| Audio Connectivity Features |
|---|
| Analog Audio Input (Rear) | 5 | | Phono Input | 1 |
| FM Tuner Features |
|---|
| Frequency Range MHz | 87.5 MHz | | Usable Sensitivity (IHF) | 1.3 μV/13.2 dBf | | Signal-to-Noise Ratio (Mono/Stereo) | 70 dB/68 dB | | Distortion (Mono/Stereo) | 0.2%/0.3% | | Stereo Separation @ 1kHz | 40 dB | | Selectivity ±400kHz | 70 dB | | AM Tuner Specifications |
|---|
| Frequency Range kHz | 520 kHz | | Signal-to-Noise Ratio | 38 dB | | Usable Sensitivity (Loop) | 500 μV | | Selectivity | (±10 kHz): 30 dB | | Distortion | (1 kHz, 50% mod): 1.0% | | General Specifications |
|---|
| Power Requirement | 120V AC, 60Hz (USA); 220V – 240V AC, 50Hz/60Hz (EU) | | Power Consumption (full power/idle) | 310W maximum, | | Dimensions (H x W x D – Metric/English) | 121 mm x 440 mm x 300 mm | |
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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