
-
2012-10-28, 09:53 AM
#821
-
The Following User Says Thank You to Edgarhorns in LA For This Useful Post:
-
2012-10-28, 09:58 AM
#822
-
The Following 3 Users Say Thank You to Edgarhorns in LA For This Useful Post:
-
2012-10-28, 07:25 PM
#823
-
-
2012-10-28, 09:14 PM
#824
-
-
2012-10-30, 09:39 PM
#825
"Trumpet" Vacuum Tube MM Phonostage
$3250

The Trumpet phono preamp is a reference quality unit for the most demanding of audiophiles. It's main features are fully balanced operation and switchable polarity. Housed in a single chassis, the power supply is mounted well below the amplifier (about the same height as separate stacked boxes). Eight hand-matched vacuum tubes complement the nearly dual-mono construction of the amplifiers.
The Trumpet implements a number of unusual circuit topologies and tricks to improve performance (way too many to list here). The highlights include bipolar high voltage power supplies that are fully choke regulated (continuous current), choke regulated dc heater supply, class A differential long-tailed gain pairs, current source loaded cathode follower outputs, passive shunt power supply regulation, split RC equalization, and no feedback anywhere. Frequency response is tremendous, flat from 5Hz out past 250kHz. Distortion is exceptionally low at 0.03%.
Premium components are used throughout. Gold-plated connectors, sockets, and switches, audiophile-grade polypropylene coupling capacitors, metal-film resistors, soft-recovery diodes, film bypass capacitors, high-grade 0.063" thick aluminum sheet metal, cork/rubber damping, and thick computer-engraved aluminum faceplates.
The chassis is a marvel of anti-vibration architecture. Circuit boards are freely hung like suspension bridges from solid support towers. Acoustic cork rubber is attached to the inside of the chassis cover. Sorbothane feet provide isolation from the mounting surface. In addition, the chassis benefits from an inherent chimney effect for enhanced convection cooling and increased airflow past the tubes. The sheet metal chassis forms a complete electric field shield around the electronics (with the exception of the exposed tube plates) with careful attention paid to internal shielding and grounding.
Features
Fully balanced differential circuitry |
Class A operation, no feedback |
All tube signal path |
Choke regulated power supplies |
DC heaters |
Passive, split RIAA |
Extra low input capacitance |
Polarity / Mute switches |
Single box design |
Specifications
Gain: |
44dB |
Input Impedance: |
47k |
Output Impedance: |
750 ohms |
RIAA Response: |
+/-0.5dB from 20Hz to 20kHz |
Bandwidth: |
5Hz to 250kHz |
Distortion: |
<0.03% @1kHz |
Noise: |
TBD |
Size: |
12" x 7" x 12" |
Weight: |
14 lbs. |
Power: |
120Vac 70W |
Tube Compliment: |
12AX7 x 4, 12AU7 x 4 |

Downloads
User Manual
-
-
2012-11-04, 08:03 PM
#826
-
The Following User Says Thank You to Leo Yeh For This Useful Post:
-
2012-11-07, 10:05 PM
#827
Vidocq DDQ Turntable




€9000+
-
-
2012-11-07, 10:05 PM
#828
Wagner Audio Concerto Grosso Turntable

€8500
-
-
2012-11-07, 10:06 PM
#829
Klangwellen Manufactur Turntable


€12800
-
-
2012-11-09, 10:17 PM
#830

Retro Hi-Fi Girl Friday
http://itishifi.blogspot.com/
FRANCE - FEBRUARY: Files pictures of French actress Marie France Pisier, February 1968. BOTTI/STILLS/GAMMA
-
發文規則
- 您不可以發表新主題
- 您不可以發表回覆
- 您不可以上傳附件
- 您不可以編輯自己的文章
-
討論區規則
|