1.Cary CAD 808/Rocket 88 R สภาพดีราคา 41,111.B
2.Audio Resech Classic 30 สภาพดีราคา 45,999.B
สนใจติดต่อ 0816623531

Specifications: Rocket 88 R Stereo Power Amplifier
DIMENSIONS: 10”W x 18”D x 6”H (25.4 cm x 45.7 cm x 15.2 cm)
WEIGHT: 45 Lb.. (20.4 kg)
CIRCUIT TYPE: Push-Pull Triode Class A, Ultra-linear Class A/B
POWER OUTPUT: 30 Watts Triode, 60 Watts Ultra-linear
INPUT SENSITIVITY: 1.2 volt for full output
INPUT IMPEDANCE: 150,000 ohms
NOISE AND HUM: -87 dB below rated output
FREQUENCY RESPONSE: 10 Hz to 82,000 Hz + 0, -3.0 dB @ 1 watt
TUBES: 2-12BZ7 Dual Triode, Phase inverter, gain stage (12AX7, 12AY7)
2-EL-84 Current source (or 6BQ5)
4-KT-88 Output tubes (or EL-34, 6550, KT-66, KT-77, KT-90)
2-1629 Green ‘Cat Eye’ indicator tubes
TRANSFORMERS: 1-EI laminated core power transformer
2-Special interleaved output transformer
3-Filter Chokes
200% duty cycle on all transformers
RESISTORS: 1.0 % metal film
CAPACITORS: Polystyrene and polypropylene (oil filled optional)
POWER SUPPLY
CAPACITORS: 2-560 μFD @ 450 VDC
3-10 μFD Film and foil @ 600 VDC
1-47 μFD @ 450 VDC
AC CORD: Detachable 3 conductor 14 gauge
AC POWER
REQUIREMENTS: 117 volts or 240 volts AC 50/60 Hz
300 watts operate
WARM-UP TIME: 3 minutes
BREAK-IN PERIOD: 100 hours of music playing time
FINISH: Black Epoxy powder coat, Anodized Aluminum face plate

Audio Resech Classic 30
Description

its tempting to regard the Classic 30 as merely the smaller sibling of the Classic 60 and 150. But the sceptical music lover or audiophile who auditions the Classic 30 is in for quite a shock. Because this little hybrid stereo amplifier - rated at 30 watts per channel packs a sonic authority and eloquent musical veracity that larger, more conventional power amplifiers might envy.

Our engineers have discovered that sometimes less is very definitely more. Of course. the Classic 30 features almost all the same technology as its bigger brothers, scaled down for more modest applications. It has four 6550s instead of eight, two 6FQ7 driver tubes instead of four, and no fans because it runs remarkably cool without any help whatever.

But this smaller design still retains a similar degree of exceptional musical resolution. Even at low gain settings, the Classic 30 is far more musically lucid than amplifiers objectively far more powerful.

The Classic 30 is at its pristine best with moderately efficient loudspeakers in small to medium sized listening rooms: with program materials that demand high resolution and subtlety rather than pure muscle. In that context, it reveals the same sonic mastery as its more powerful siblings.
Specifications

Power output: 30 watts per channel into 16Ω (stereo)

Frequency response: 15Hz to 20kHz

Total harmonic distortion: 1%

Damping factor: 23

Input sensitivity: 0.4V

Signal to noise ratio: 93dB

Speaker load impedance: 4Ω to 16Ω

Valve complement: 4 x 6550, 2 x 6FQ7/6CG7

Dimensions: 480 x 180 x 370mm