As I mentioned earlier, the 350 is not the equal of the 310C. Reception quality can vary from day to day, and sometimes hour to hour. There is a noticeable midbass hump that on most systems will require an adjustment of subwoofer levels. The soundstage is not as wide, nor does it have the focus of the 310C. Tuning is made more difficult because the tuning knob is metal, and by touching it you become part of the antenna system. Perhaps the best way to deal with this is to tune the 350 wearing gloves, but in the summer this may be rather uncomfortable.
The 350 series went through the 350D, which was finally discontinued in September 1966. The 350B had a neat feature on the front panel - a quarter inch stereo phono plug for going directly into tape recorders.
The 330 series were both AM and FM tuners. None of the 330s had built in multiplex, but the C and D do have MPX out jacks. The 330s call themselves stereo tuners, but they are not. Early experiments in stereo broadcasting involved putting one channel on AM
and the other on FM. The 330s are set up so you can get AM in the right channel and FM in the left. This is great for listening to the ball game and the opera at the same time, other than this rather bizarre use its contemporary functionality is limited.
Cosmetically, the 330D sports dual circular vernier backlit tuning knobs. One nice touch is that the light is brighter on the dial in use. In AM/FM stereo mode the two dials are equally lit. Besides the two tuning dials, the 330D has a AM-FM tuning meter switch, a knob that turns the unit on and selects mono, stereo, or stereo reverse mode, and a knob that chooses AM, wideband AM, distant AM, and FM. The 330D has 12 tubes. The FM side of the 330D sounds much like the 310C, and all my comments about the 310C could be echoed here. The AM section is a pleasant surprise. In wideband mode it is quite listenable, with extended highs and a well-controlled bass. If Stereo AM broadcasts sound this good, there may be a future on the AM dial after all. It's too bad that in Boston there isn't anything accept ball games on AM worth listening to, unless talk-radio is your oeuvre.
The 333 is the first of the 330 series with a built-in multiplex adapter. It wasn't made until September 1962, and by July 1963 had been replaced by the 333B, which was discontinued in September 1965, along with a majority of Scotts' tube products.
The 340, introduced in September 1962, is the precursor of the modern receiver. It was basically a 350 tuner combined with a 299 integrated amplifier. It was rated at 60 Watts (30 per side) utilizing 2 7559 output tubes per side. The pre-amp section consisted of 4 12AX7s. While Scott tried to keep as close to the styling of its tuners as possible, with the ever present circular back-lit dial, the 340 has a somewhat clunky look of most of the early receivers. It weighed a hefty 35 lbs, and measured 16 3/4' by 5 1/2" by 16 1/2", not the largest tube receiver ever made, but still quite a load to carry. This is the sort of piece that UPS loves to drop from off the back of their trucks due to its size and weight. I have not seen or heard one of these beasts, so I can't tell you how it sounds. I could guess that its sounds very much like a 350 through a 299C or LK-72 integrated amps, both of which will be discussed later in the series.
A unique feature on the 340 was a little thing called a "sonic monitor". To find which FM stations were broadcasting in stereo, the user had merely to switch in the sonic monitor and tune across the FM band till the tuner emitted a monitor tone through the systems' speakers. The user was then assured of tuning a "true" stereo signal. Perhaps it even worked, but it did not find its way onto any later designs.
The 355 was an 333 AM/FM multiplex tuner combined with a 130 preamplifier. Scott recommended their 208 40 watt per side power amplifier as a companion piece. Unlike the 330 series, which had two circular dials, the 355 has only one dial that serves double duty for both AM and FM. I find it overly busy looking, but those who are into knobs and switches may find it attractive. It weighs 19 lbs, and measures 16 3/4" by 5 1/2" by 13". The preamp section may be bypassed so that the tuner may be used alone. The FM specs are the same as a 350.
The 311 series were a less expensive alternative to the 310. The 311D was Spartan in appearance, with only a circular vernier dial, and on-off power switch, a tuning meter, and a volume level knob. Its specs were only slightly inferior to the 310 while it was only 2/3 the price. Both the C and D have MPX out jacks. The 311 series was replaced by the model 314 in July 1960, it too had an MPX out jack. The 314 was made until September 1964 when it was replaced by the solid-state model 315 in September 1965.