Specifications:
ACOUSTIC AMPLIFIER:
T60(Compact60 Type)
Front side: 
1. Input(CH. 1): Signal input, socket for 6.3mm mono jackplug. 
2. High/low: Input sensitivity switch, attenuator. 
3. Clip: Overload indicator. 
4. Gain: Input level control. 
5. Colour: Tone colour filter activation switch. 
6. Bass: Bass frequency level control. 
7. Middle: Middle trequency level control. 
8. Treble: Treble frequency level control. 
9. Input(CH. 2): Signal input, combo-socket for 6.3mm mono jackplug and XLR-connectors. 
10. Line/mic: Signal source selector switch: Line(only via jackplug) for instruments (pickup) and other line level sources, mic(only via XLR-connector) for microphones. 
11. Pan: Effect signal distribution control. 
12. Selector: Effect select switch. 
13. Level: Level control internal effect. 
14. Power: On/off status indicator. 
15. Master: Master level control. 
Rear side: 
1. Line out: The line out supplies a pre-AMP signal taken after tone-control, effects and master for forwarding to other appliances. 
2. Headphones: This output enables you to connect stereo head phones and mutes the loudspeaker. 
! ! ! Warning: Only use headphones with stereo jackplugs in this output socket! ! ! 
3. Send: Send is an output to connect to an external effect device and in conjunction with return (input) forms a loop here designed as external effect loop. The effect can be switched on or off via footswitch. 
4. Return: Return as part of the effect loop operates as signal input an external effect device (output of the effect device). The effect can be switched on or off via footswitch. Return on its own can also be used as quasi auxiliary signal input (-10 dbV). 
5. Tuner: The tuner output supplies a pre-master signal (-9 dbV) to connect an external tuner to the Choir T60. 
6. Footswitch: Connection socket for a double-footswitch (on-/ off-switch, tip = internal effect/ring = external effect on/off ). 
7. DI-out: Preamp-output with symmetrical signal, after tone- control, pre master, without effects. 
8. Power on: Combined mains switch with mains socket and fuse holder. Introduction:
Our company has 230 workers, include 15 professional engineers. They supervise the whole producing line from choose material till packing. We can strictly arrange the products as your requests. 
Grand Technology is a manufacturer of musical instruments and accessories, which brand is "Grand". 
Our factory is located in one of the most important ports of South China, Shekou, Guangdong, Near HK, connects with main highways and airports. 
As the professional manufacturer, we supply kinds of musical products such tube guitar amplifiers, hand wired tube guitar amps, point to point amps, replica pedals and amps, electric guitars, acoustic guitars, ukulele, banjo, piano, etc many kinds of musical Instrument gears. 
We only provide good quality products with low prices, which are selling well in the international markets, such as USA, Europe, Japan, Korea, South Africa, Kenya, South America, etc. We have plenty experiences in exporting, and be good at holding the mainstream of musical instrument markets. 
At present, we establish technology, purchasing, and sales groups to serve our customers. We are thinking in your way, doing as your requests and eager to be your reliable supplier. 
Any inquiry will be welcome and highly appreciated.