Verified answer

Scott, if you rally want to know what any of that stuff sounds like, you need to take your GT-6 and guitar and go listen to it with that amplifier. My rule number one when buying equipment is never listen to the salesman. They are usually trying to sell what they get the most profit on. I do listen to a few local guys who are also musicians that I have a good rapport with and have bought a lot of equipment from but, you really need to go and hear the sound first hand. When I did that, I became sold on JBL speakers and to my ear, nothing sounds that good for reproducing the precise sound I want to achieve. The next closest thing has always been a really high quality Roland amplifier. I do have a Yamaha keyboard and I like the sound on that but, my Roland Juno-G played through my JBL speakers blows the Yamaha away sound quality wise (in my opinion of course). So, go play through it!

Here are the specs on that Yamaha - it actually looks pretty good for your purposes but, I have not heard it so, I can say about the sound quality ...

Yamaha STAGEPAS 300 Portable PA System Features:

* Portable PA system

* 2 speakers with powered mixer

* Speaker cables (16' x 2)

* 2-way bass reflex speakers

* 6/8-channel powered mixer

* 4 mono channels

* 2 stereo channels

* 4 XLR inputs (ch 1-4)

* 6 1/4" line inputs

* Stereo RCA inputs

* Stereo line inputs

* Class D power amp (150W + 150W)

* 24-bit digital reverb

* Mic stand mountable with BMS10A adapter

* Speaker enclosure accessory compartment

* Includes power cable and speaker cable

Yamaha STAGEPAS 300 Portable PA System Specifications:

* Maximum Output Power: 150W+150W/6 ohms @10% THD at 1kHz (SPEAKER L/R) 100W+100W/6 ohms @1% THD at 1kHz (SPEAKER L/R) ±:15dB

* Frequency Response: 3dB, 0dB, +1dB @20Hz–20kHz, 1W Output/6 ohms (Without MUSIC/SPEECH, EQ and SP EQ Circuit) (SPEAKER L/R); -3dB, 0dB, +1dB @ 20Hz–20kHz, +4dBu 10kOhm Load [MUSIC/SPEECH] switch=MUSIC (MONITOR OUT, REC OUT)

* Total Harmonic Distortion: 1% @ 1kHz, 50W output (SPEAKER L/R); 0.5% @20Hz–20kHz, +14dBu 10kOhm (MONITOR OUT, REC OUT)

* Speaker L/R output noise: -65 dBu Residual

* Monitor/Rec output noise: -90 dBu Residual

* Monitor Out/Ch Level output noise: -67 dBu Residual @ nominal level (CH1–4; MONITOR OUT)

* Crosstalk: -70 dB between input channels

* Weight: 40 lbs. (18 kg) Power Consumption: 70W

* Stereo Input channel EQ

* High: 10kHz shelving

* Low: 100Hz shelving

* Shelving turnover/rollover frequency: 3dB before maximum cut or boost; ±:15dB

* Enclosure: bass-reflex type

* LF driver: 8" (20cm) cone driver

* HF driver: 1" (2.54cm) compression driver

* Cross Over Frequency: 4kHz

* Frequency Range: 55Hz-20kHz

* Maximum Output Level: 112dB (1m)